231313320200 has 48 divisors (see below), whose sum is σ = 537905700180. Its totient is φ = 92507740160.

The previous prime is 231313320163. The next prime is 231313320211. The reversal of 231313320200 is 2023313132.

It can be written as a sum of positive squares in 6 ways, for example, as 204678427396 + 26634892804 = 452414^2 + 163202^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 971372 + ... + 1185828.

Almost surely, 2^231313320200 is an apocalyptic number.

231313320200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231313320200 is an abundant number, since it is smaller than the sum of its proper divisors (306592379980).

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

231313320200 is a wasteful number, since it uses less digits than its factorization.

231313320200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219866 (or 219857 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 231313320200 its reverse (2023313132), we get a palindrome (233336633332).

The spelling of 231313320200 in words is "two hundred thirty-one billion, three hundred thirteen million, three hundred twenty thousand, two hundred".