123131011010 has 32 divisors (see below), whose sum is σ = 253490307840. Its totient is φ = 42184308672.

The previous prime is 123131010973. The next prime is 123131011063. The reversal of 123131011010 is 10110131321.

It is a happy number.

It is a super-2 number, since 2×123131011010² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 574469 + ... + 759128.

It is an arithmetic number, because the mean of its divisors is an integer number (7921572120).

Almost surely, 2^123131011010 is an apocalyptic number.

123131011010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123131011010 is an abundant number, since it is smaller than the sum of its proper divisors (130359296830).

123131011010 is a wasteful number, since it uses less digits than its factorization.

123131011010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334930.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 123131011010 its reverse (10110131321), we get a palindrome (133241142331).

The spelling of 123131011010 in words is "one hundred twenty-three billion, one hundred thirty-one million, eleven thousand, ten".