23131321110 has 48 divisors (see below), whose sum is σ = 61160795280. Its totient is φ = 6063802560.

The previous prime is 23131321021. The next prime is 23131321139. The reversal of 23131321110 is 1112313132.

23131321110 is a `hidden beast` number, since 231 + 3 + 1 + 321 + 110 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2172781 + ... + 2183400.

It is an arithmetic number, because the mean of its divisors is an integer number (1274183235).

Almost surely, 2^23131321110 is an apocalyptic number.

23131321110 is an abundant number, since it is smaller than the sum of its proper divisors (38029474170).

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

23131321110 is a wasteful number, since it uses less digits than its factorization.

23131321110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4356253 (or 4356250 counting only the distinct ones).

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

Adding to 23131321110 its reverse (1112313132), we get a palindrome (24243634242).

The spelling of 23131321110 in words is "twenty-three billion, one hundred thirty-one million, three hundred twenty-one thousand, one hundred ten".