231012331320 has 32 divisors (see below), whose sum is σ = 693036994320. Its totient is φ = 61603288320.

The previous prime is 231012331301. The next prime is 231012331321. The reversal of 231012331320 is 23133210132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231012331321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 962551261 + ... + 962551500.

Almost surely, 2^231012331320 is an apocalyptic number.

231012331320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231012331320 is an abundant number, since it is smaller than the sum of its proper divisors (462024663000).

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

231012331320 is a wasteful number, since it uses less digits than its factorization.

231012331320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1925102775 (or 1925102771 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 231012331320 its reverse (23133210132), we get a palindrome (254145541452).

The spelling of 231012331320 in words is "two hundred thirty-one billion, twelve million, three hundred thirty-one thousand, three hundred twenty".