631433376 has 72 divisors (see below), whose sum is σ = 2052165024. Its totient is φ = 180408960.

The previous prime is 631433359. The next prime is 631433401. The reversal of 631433376 is 673334136.

631433376 is a `hidden beast` number, since 6 + 314 + 3 + 337 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 631433376.

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, 154590 + ... + 158621.

It is an arithmetic number, because the mean of its divisors is an integer number (28502292).

Almost surely, 2^631433376 is an apocalyptic number.

It is an amenable number.

631433376 is an abundant number, since it is smaller than the sum of its proper divisors (1420731648).

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

631433376 is a wasteful number, since it uses less digits than its factorization.

631433376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313234 (or 313223 counting only the distinct ones).

The product of its digits is 81648, while the sum is 36.

The square root of 631433376 is about 25128.3381066078. The cubic root of 631433376 is about 857.9115431979.

The spelling of 631433376 in words is "six hundred thirty-one million, four hundred thirty-three thousand, three hundred seventy-six".