431323400 has 24 divisors (see below), whose sum is σ = 1002827370. Its totient is φ = 172529280.

The previous prime is 431323397. The next prime is 431323463. The reversal of 431323400 is 4323134.

It can be written as a sum of positive squares in 3 ways, for example, as 259660996 + 171662404 = 16114^2 + 13102^2 .

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, 1078109 + ... + 1078508.

Almost surely, 2^431323400 is an apocalyptic number.

431323400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

431323400 is an abundant number, since it is smaller than the sum of its proper divisors (571503970).

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

431323400 is a wasteful number, since it uses less digits than its factorization.

431323400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2156633 (or 2156624 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 431323400 is about 20768.3268464265. The cubic root of 431323400 is about 755.5577651159.

Adding to 431323400 its reverse (4323134), we get a palindrome (435646534).

The spelling of 431323400 in words is "four hundred thirty-one million, three hundred twenty-three thousand, four hundred".