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131001010200 = 23325272778339
BaseRepresentation
bin111101000000001000…
…1001100100000011000
3110112010200111211110200
41322000101030200120
54121242224311300
6140103034142200
712315220133304
oct1720021144030
9415120454420
10131001010200
1150614722995
122147bb81960
13c4793a6768
1464aa3dad04
15361ab94200
hex1e8044c818

131001010200 has 72 divisors (see below), whose sum is σ = 439945065300. Its totient is φ = 34933602240.

The previous prime is 131001010199. The next prime is 131001010219. The reversal of 131001010200 is 2010100131.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×1310010102002 (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 36387370 + ... + 36390969.

Almost surely, 2131001010200 is an apocalyptic number.

131001010200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131001010200 is an abundant number, since it is smaller than the sum of its proper divisors (308944055100).

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

131001010200 is a wasteful number, since it uses less digits than its factorization.

131001010200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72778361 (or 72778349 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

Adding to 131001010200 its reverse (2010100131), we get a palindrome (133011110331).

The spelling of 131001010200 in words is "one hundred thirty-one billion, one million, ten thousand, two hundred".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 18 20 24 25 30 36 40 45 50 60 72 75 90 100 120 150 180 200 225 300 360 450 600 900 1800 72778339 145556678 218335017 291113356 363891695 436670034 582226712 655005051 727783390 873340068 1091675085 1310010102 1455566780 1746680136 1819458475 2183350170 2620020204 2911133560 3275025255 3638916950 4366700340 5240040408 5458375425 6550050510 7277833900 8733400680 10916750850 13100101020 14555667800 16375126275 21833501700 26200202040 32750252550 43667003400 65500505100 131001010200