23131130112 has 108 divisors (see below), whose sum is σ = 67173484560. Its totient is φ = 7654800384.

The previous prime is 23131130111. The next prime is 23131130131. The reversal of 23131130112 is 21103113132.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (23131130111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 284143 + ... + 356369.

Almost surely, 2^23131130112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23131130112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33586742280).

23131130112 is an abundant number, since it is smaller than the sum of its proper divisors (44042354448).

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

23131130112 is a wasteful number, since it uses less digits than its factorization.

23131130112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72388 (or 72371 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 23131130112 its reverse (21103113132), we get a palindrome (44234243244).

The spelling of 23131130112 in words is "twenty-three billion, one hundred thirty-one million, one hundred thirty thousand, one hundred twelve".