431312428 has 6 divisors (see below), whose sum is σ = 754796756. Its totient is φ = 215656212.

The previous prime is 431312417. The next prime is 431312443. The reversal of 431312428 is 824213134.

It is a junction number, because it is equal to n+sod(n) for n = 431312396 and 431312405.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53914050 + ... + 53914057.

Almost surely, 2^431312428 is an apocalyptic number.

It is an amenable number.

431312428 is a deficient number, since it is larger than the sum of its proper divisors (323484328).

431312428 is a wasteful number, since it uses less digits than its factorization.

431312428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107828111 (or 107828109 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

The square root of 431312428 is about 20768.0626925094. The cubic root of 431312428 is about 755.5513584382.

The spelling of 431312428 in words is "four hundred thirty-one million, three hundred twelve thousand, four hundred twenty-eight".