231431422400 has 42 divisors (see below), whose sum is σ = 569465947680. Its totient is φ = 92572568320.

The previous prime is 231431422381. The next prime is 231431422423. The reversal of 231431422400 is 4224134132.

It is a self number, because there is not a number n which added to its sum of digits gives 231431422400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72320720 + ... + 72323919.

It is an arithmetic number, because the mean of its divisors is an integer number (13558713040).

Almost surely, 2^231431422400 is an apocalyptic number.

231431422400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231431422400 is an abundant number, since it is smaller than the sum of its proper divisors (338034525280).

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

231431422400 is a wasteful number, since it uses less digits than its factorization.

231431422400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144644661 (or 144644646 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 231431422400 its reverse (4224134132), we get a palindrome (235655556532).

The spelling of 231431422400 in words is "two hundred thirty-one billion, four hundred thirty-one million, four hundred twenty-two thousand, four hundred".