123813607231 has 4 divisors (see below), whose sum is σ = 123815738200. Its totient is φ = 123811476264.

The previous prime is 123813607223. The next prime is 123813607237. The reversal of 123813607231 is 132706318321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123813607231 - 2³ = 123813607223 is a prime.

It is a super-2 number, since 2×123813607231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123813607237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 975816 + ... + 1095373.

It is an arithmetic number, because the mean of its divisors is an integer number (30953934550).

Almost surely, 2^123813607231 is an apocalyptic number.

123813607231 is a deficient number, since it is larger than the sum of its proper divisors (2130969).

123813607231 is an equidigital number, since it uses as much as digits as its factorization.

123813607231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2130968.

The product of its (nonzero) digits is 36288, while the sum is 37.

The spelling of 123813607231 in words is "one hundred twenty-three billion, eight hundred thirteen million, six hundred seven thousand, two hundred thirty-one".