231551431354400 has 72 divisors (see below), whose sum is σ = 565278581105280. Its totient is φ = 92619974600960.

The previous prime is 231551431354379. The next prime is 231551431354409. The reversal of 231551431354400 is 4453134155132.

It is not an unprimeable number, because it can be changed into a prime (231551431354409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 135508541 + ... + 137206659.

It is an arithmetic number, because the mean of its divisors is an integer number (7851091404240).

Almost surely, 2^{231551431354400} is an apocalyptic number.

231551431354400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231551431354400 is an abundant number, since it is smaller than the sum of its proper divisors (333727149750880).

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

231551431354400 is a wasteful number, since it uses less digits than its factorization.

231551431354400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1868586 (or 1868573 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 41.

The spelling of 231551431354400 in words is "two hundred thirty-one trillion, five hundred fifty-one billion, four hundred thirty-one million, three hundred fifty-four thousand, four hundred".