631374336 has 120 divisors (see below), whose sum is σ = 1834676844. Its totient is φ = 209018880.

The previous prime is 631374329. The next prime is 631374343. The reversal of 631374336 is 633473136.

631374336 is a `hidden beast` number, since 6 + 313 + 7 + 4 + 336 = 666.

It is an interprime number because it is at equal distance from previous prime (631374329) and next prime (631374343).

It can be written as a sum of positive squares in 2 ways, for example, as 582932736 + 48441600 = 24144^2 + 6960^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 631374336.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 833670 + ... + 834426.

Almost surely, 2^631374336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 631374336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (917338422).

631374336 is an abundant number, since it is smaller than the sum of its proper divisors (1203302508).

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

631374336 is a wasteful number, since it uses less digits than its factorization.

631374336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962 (or 943 counting only the distinct ones).

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

The square root of 631374336 is about 25127.1633098525. The cubic root of 631374336 is about 857.8848036778.

The spelling of 631374336 in words is "six hundred thirty-one million, three hundred seventy-four thousand, three hundred thirty-six".