231172400 has 30 divisors (see below), whose sum is σ = 555392652. Its totient is φ = 92468800.

The previous prime is 231172399. The next prime is 231172421. The reversal of 231172400 is 4271132.

231172400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 5 ways as a sum of consecutive naturals, for example, 288566 + ... + 289365.

Almost surely, 2^231172400 is an apocalyptic number.

231172400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231172400 is an abundant number, since it is smaller than the sum of its proper divisors (324220252).

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

231172400 is a wasteful number, since it uses less digits than its factorization.

231172400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577949 (or 577938 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 231172400 is about 15204.3546393788. The cubic root of 231172400 is about 613.7318482332.

The spelling of 231172400 in words is "two hundred thirty-one million, one hundred seventy-two thousand, four hundred".