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2431312000 = 27531311689
BaseRepresentation
bin1001000011101010…
…1110000010000000
320021102221110001121
42100322232002000
514434403441000
61041131242024
7114151545115
oct22072560200
96242843047
102431312000
111038459767
1257a2a9314
132c992cb70
14190c9090c
15e36adb1a
hex90eae080

2431312000 has 128 divisors (see below), whose sum is σ = 6510394800. Its totient is φ = 897638400.

The previous prime is 2431311997. The next prime is 2431312019. The reversal of 2431312000 is 2131342.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 256768576 + 2174543424 = 16024^2 + 46632^2 .

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×24313120002 = 11822556082688000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202156 + ... + 213844.

Almost surely, 22431312000 is an apocalyptic number.

2431312000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2431312000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3255197400).

2431312000 is an abundant number, since it is smaller than the sum of its proper divisors (4079082800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2431312000 is a wasteful number, since it uses less digits than its factorization.

2431312000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11731 (or 11709 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2431312000 is about 49308.3360092388. The cubic root of 2431312000 is about 1344.6633394066.

Adding to 2431312000 its reverse (2131342), we get a palindrome (2433443342).

The spelling of 2431312000 in words is "two billion, four hundred thirty-one million, three hundred twelve thousand".

Divisors: 1 2 4 5 8 10 13 16 20 25 26 32 40 50 52 64 65 80 100 104 125 128 130 160 200 208 250 260 320 325 400 416 500 520 640 650 800 832 1000 1040 1300 1600 1625 1664 2000 2080 2600 3200 3250 4000 4160 5200 6500 8000 8320 10400 11689 13000 16000 20800 23378 26000 41600 46756 52000 58445 93512 104000 116890 151957 187024 208000 233780 292225 303914 374048 467560 584450 607828 748096 759785 935120 1168900 1215656 1461125 1496192 1519570 1870240 2337800 2431312 2922250 3039140 3740480 3798925 4675600 4862624 5844500 6078280 7480960 7597850 9351200 9725248 11689000 12156560 15195700 18702400 18994625 19450496 23378000 24313120 30391400 37404800 37989250 46756000 48626240 60782800 75978500 93512000 97252480 121565600 151957000 187024000 243131200 303914000 486262400 607828000 1215656000 2431312000