431120400 has 60 divisors (see below), whose sum is σ = 1381026192. Its totient is φ = 114965120.

The previous prime is 431120399. The next prime is 431120429. The reversal of 431120400 is 4021134.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 431120400.

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, 178434 + ... + 180833.

Almost surely, 2^431120400 is an apocalyptic number.

431120400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

431120400 is an abundant number, since it is smaller than the sum of its proper divisors (949905792).

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

431120400 is a wasteful number, since it uses less digits than its factorization.

431120400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359288 (or 359277 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 431120400 is about 20763.4390215109. The cubic root of 431120400 is about 755.4392134717.

Adding to 431120400 its reverse (4021134), we get a palindrome (435141534).

The spelling of 431120400 in words is "four hundred thirty-one million, one hundred twenty thousand, four hundred".