231312043320 has 64 divisors (see below), whose sum is σ = 693990512640. Its totient is φ = 61678377600.

The previous prime is 231312043307. The next prime is 231312043331. The reversal of 231312043320 is 23340213132.

It is a super-2 number, since 2×231312043320² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 1620025 + ... + 1757015.

It is an arithmetic number, because the mean of its divisors is an integer number (10843601760).

Almost surely, 2^231312043320 is an apocalyptic number.

231312043320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231312043320 is an abundant number, since it is smaller than the sum of its proper divisors (462678469320).

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

231312043320 is a wasteful number, since it uses less digits than its factorization.

231312043320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151076 (or 151072 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 231312043320 its reverse (23340213132), we get a palindrome (254652256452).

The spelling of 231312043320 in words is "two hundred thirty-one billion, three hundred twelve million, forty-three thousand, three hundred twenty".