23113131000 has 128 divisors (see below), whose sum is σ = 72165038400. Its totient is φ = 6159052800.

The previous prime is 23113130977. The next prime is 23113131011. The reversal of 23113131000 is 13131132.

It is a super-2 number, since 2×23113131000² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7825524 + ... + 7828476.

Almost surely, 2^23113131000 is an apocalyptic number.

23113131000 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 23113131000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36082519200).

23113131000 is an abundant number, since it is smaller than the sum of its proper divisors (49051907400).

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

23113131000 is a wasteful number, since it uses less digits than its factorization.

23113131000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5586 (or 5572 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 23113131000 its reverse (13131132), we get a palindrome (23126262132).

The spelling of 23113131000 in words is "twenty-three billion, one hundred thirteen million, one hundred thirty-one thousand".