Search a number
-
+
23131102232 = 237413055397
BaseRepresentation
bin10101100010101110…
…001001110000011000
32012201001020202001002
4111202232021300120
5334333030232412
614343135444132
71446132060560
oct254256116030
965631222032
1023131102232
11989a9a4517
124596686648
1322482a2554
141196097da0
15905aa9dc2
hex562b89c18

23131102232 has 16 divisors (see below), whose sum is σ = 49566647760. Its totient is φ = 9913329504.

The previous prime is 23131102213. The next prime is 23131102237. The reversal of 23131102232 is 23220113132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23131102237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206527643 + ... + 206527754.

It is an arithmetic number, because the mean of its divisors is an integer number (3097915485).

Almost surely, 223131102232 is an apocalyptic number.

It is an amenable number.

23131102232 is an abundant number, since it is smaller than the sum of its proper divisors (26435545528).

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

23131102232 is a wasteful number, since it uses less digits than its factorization.

23131102232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413055410 (or 413055406 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 23131102232 its reverse (23220113132), we get a palindrome (46351215364).

The spelling of 23131102232 in words is "twenty-three billion, one hundred thirty-one million, one hundred two thousand, two hundred thirty-two".

Divisors: 1 2 4 7 8 14 28 56 413055397 826110794 1652221588 2891387779 3304443176 5782775558 11565551116 23131102232