231000022231320 has 64 divisors (see below), whose sum is σ = 699728222718720. Its totient is φ = 61001947615104.

The previous prime is 231000022231301. The next prime is 231000022231379. The reversal of 231000022231320 is 23132220000132.

It is a happy number.

It is a super-2 number, since 2×231000022231320² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

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, 9344648734 + ... + 9344673453.

It is an arithmetic number, because the mean of its divisors is an integer number (10933253479980).

Almost surely, 2^{231000022231320} is an apocalyptic number.

231000022231320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231000022231320 is an abundant number, since it is smaller than the sum of its proper divisors (468728200487400).

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

231000022231320 is a wasteful number, since it uses less digits than its factorization.

231000022231320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18689322304 (or 18689322300 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 231000022231320 its reverse (23132220000132), we get a palindrome (254132242231452).

The spelling of 231000022231320 in words is "two hundred thirty-one trillion, twenty-two million, two hundred thirty-one thousand, three hundred twenty".