231243510400 has 96 divisors (see below), whose sum is σ = 652850045280. Its totient is φ = 79283481600.

The previous prime is 231243510389. The next prime is 231243510503. The reversal of 231243510400 is 4015342132.

It is a super-2 number, since 2×231243510400² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

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, 5139286 + ... + 5184085.

It is an arithmetic number, because the mean of its divisors is an integer number (6800521305).

Almost surely, 2^231243510400 is an apocalyptic number.

231243510400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231243510400 is an abundant number, since it is smaller than the sum of its proper divisors (421606534880).

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

231243510400 is a wasteful number, since it uses less digits than its factorization.

231243510400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10323402 (or 10323385 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 231243510400 its reverse (4015342132), we get a palindrome (235258852532).

The spelling of 231243510400 in words is "two hundred thirty-one billion, two hundred forty-three million, five hundred ten thousand, four hundred".