23131231110 has 288 divisors, whose sum is σ = 67096250208. Its totient is φ = 5524346880.

The previous prime is 23131231103. The next prime is 23131231121. The reversal of 23131231110 is 1113213132.

23131231110 is a `hidden beast` number, since 2 + 31 + 312 + 311 + 10 = 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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 99275554 + ... + 99275786.

It is an arithmetic number, because the mean of its divisors is an integer number (232973091).

Almost surely, 2^23131231110 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23131231110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33548125104).

23131231110 is an abundant number, since it is smaller than the sum of its proper divisors (43965019098).

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

23131231110 is a wasteful number, since it uses less digits than its factorization.

23131231110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440 (or 424 counting only the distinct ones).

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

Adding to 23131231110 its reverse (1113213132), we get a palindrome (24244444242).

The spelling of 23131231110 in words is "twenty-three billion, one hundred thirty-one million, two hundred thirty-one thousand, one hundred ten".