231313203120 has 80 divisors (see below), whose sum is σ = 718531725312. Its totient is φ = 61557861120.

The previous prime is 231313203061. The next prime is 231313203157. The reversal of 231313203120 is 21302313132.

It is a tau number, because it is divible by the number of its divisors (80).

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, 863632 + ... + 1099311.

Almost surely, 2^231313203120 is an apocalyptic number.

231313203120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231313203120 is an abundant number, since it is smaller than the sum of its proper divisors (487218522192).

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

231313203120 is a wasteful number, since it uses less digits than its factorization.

231313203120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1963450 (or 1963444 counting only the distinct ones).

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

Adding to 231313203120 its reverse (21302313132), we get a palindrome (252615516252).

The spelling of 231313203120 in words is "two hundred thirty-one billion, three hundred thirteen million, two hundred three thousand, one hundred twenty".