123131031210 has 96 divisors (see below), whose sum is σ = 367625718720. Its totient is φ = 28278892800.

The previous prime is 123131031209. The next prime is 123131031259. The reversal of 123131031210 is 12130131321.

123131031210 is a `hidden beast` number, since 1 + 2 + 31 + 310 + 312 + 10 = 666.

It is a super-2 number, since 2×123131031210² (a number of 23 digits) contains 22 as substring.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3254211 + ... + 3291830.

It is an arithmetic number, because the mean of its divisors is an integer number (3829434570).

Almost surely, 2^123131031210 is an apocalyptic number.

123131031210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123131031210 is an abundant number, since it is smaller than the sum of its proper divisors (244494687510).

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

123131031210 is a wasteful number, since it uses less digits than its factorization.

123131031210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6546084 (or 6546081 counting only the distinct ones).

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

Adding to 123131031210 its reverse (12130131321), we get a palindrome (135261162531).

The spelling of 123131031210 in words is "one hundred twenty-three billion, one hundred thirty-one million, thirty-one thousand, two hundred ten".