431231404 has 6 divisors (see below), whose sum is σ = 754654964. Its totient is φ = 215615700.

The previous prime is 431231357. The next prime is 431231431. The reversal of 431231404 is 404132134.

It is a super-2 number, since 2×431231404² = 371921047591622432, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53903922 + ... + 53903929.

Almost surely, 2^431231404 is an apocalyptic number.

It is an amenable number.

431231404 is a deficient number, since it is larger than the sum of its proper divisors (323423560).

431231404 is a wasteful number, since it uses less digits than its factorization.

431231404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107807855 (or 107807853 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 431231404 is about 20766.1119134035. Note that the first 3 decimals coincide. The cubic root of 431231404 is about 755.5040442230.

Adding to 431231404 its reverse (404132134), we get a palindrome (835363538).

The spelling of 431231404 in words is "four hundred thirty-one million, two hundred thirty-one thousand, four hundred four".