231162052220 has 24 divisors (see below), whose sum is σ = 529571247408. Its totient is φ = 84058928000.

The previous prime is 231162052193. The next prime is 231162052249. The reversal of 231162052220 is 22250261132.

It is a self number, because there is not a number n which added to its sum of digits gives 231162052220.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 525368081 + ... + 525368520.

It is an arithmetic number, because the mean of its divisors is an integer number (22065468642).

Almost surely, 2^231162052220 is an apocalyptic number.

231162052220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231162052220 is an abundant number, since it is smaller than the sum of its proper divisors (298409195188).

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

231162052220 is a wasteful number, since it uses less digits than its factorization.

231162052220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050736621 (or 1050736619 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The spelling of 231162052220 in words is "two hundred thirty-one billion, one hundred sixty-two million, fifty-two thousand, two hundred twenty".