23515031112 has 16 divisors (see below), whose sum is σ = 58787577840. Its totient is φ = 7838343696.

The previous prime is 23515031081. The next prime is 23515031129. The reversal of 23515031112 is 21113051532.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 979792963 = 23515031112 / (2 + 3 + 5 + 1 + 5 + 0 + 3 + 1 + 1 + 1 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 489896458 + ... + 489896505.

It is an arithmetic number, because the mean of its divisors is an integer number (3674223615).

Almost surely, 2^23515031112 is an apocalyptic number.

It is an amenable number.

23515031112 is an abundant number, since it is smaller than the sum of its proper divisors (35272546728).

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

23515031112 is a wasteful number, since it uses less digits than its factorization.

23515031112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979792972 (or 979792968 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

Adding to 23515031112 its reverse (21113051532), we get a palindrome (44628082644).

The spelling of 23515031112 in words is "twenty-three billion, five hundred fifteen million, thirty-one thousand, one hundred twelve".