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23000131120 = 2451316173557
BaseRepresentation
bin10101011010111010…
…100010011000110000
32012100220210201110011
4111122322202120300
5334101013143440
614322140344304
71442651613601
oct253272423060
965326721404
1023000131120
119832a79a2a
12455a845094
132227106a55
141182923da8
158e93389ea
hex55aea2630

23000131120 has 80 divisors (see below), whose sum is σ = 53986017888. Its totient is φ = 9112463360.

The previous prime is 23000131117. The next prime is 23000131127. The reversal of 23000131120 is 2113100032.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 23000131120.

It is not an unprimeable number, because it can be changed into a prime (23000131127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6464382 + ... + 6467938.

Almost surely, 223000131120 is an apocalyptic number.

23000131120 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 23000131120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26993008944).

23000131120 is an abundant number, since it is smaller than the sum of its proper divisors (30985886768).

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

23000131120 is a wasteful number, since it uses less digits than its factorization.

23000131120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4318 (or 4312 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 23000131120 its reverse (2113100032), we get a palindrome (25113231152).

It can be divided in two parts, 230001 and 31120, that added together give a square (261121 = 5112).

The spelling of 23000131120 in words is "twenty-three billion, one hundred thirty-one thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 40 80 131 262 524 617 655 1048 1234 1310 2096 2468 2620 3085 3557 4936 5240 6170 7114 9872 10480 12340 14228 17785 24680 28456 35570 49360 56912 71140 80827 142280 161654 284560 323308 404135 465967 646616 808270 931934 1293232 1616540 1863868 2194669 2329835 3233080 3727736 4389338 4659670 6466160 7455472 8778676 9319340 10973345 17557352 18638680 21946690 35114704 37277360 43893380 87786760 175573520 287501639 575003278 1150006556 1437508195 2300013112 2875016390 4600026224 5750032780 11500065560 23000131120