631374432 has 96 divisors (see below), whose sum is σ = 1802878560. Its totient is φ = 192307200.

The previous prime is 631374421. The next prime is 631374437. The reversal of 631374432 is 234473136.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 631374393 and 631374402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631374437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123544 + ... + 128552.

It is an arithmetic number, because the mean of its divisors is an integer number (18779985).

Almost surely, 2^631374432 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 631374432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (901439280).

631374432 is an abundant number, since it is smaller than the sum of its proper divisors (1171504128).

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

631374432 is a wasteful number, since it uses less digits than its factorization.

631374432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5136 (or 5128 counting only the distinct ones).

The product of its digits is 36288, while the sum is 33.

The square root of 631374432 is about 25127.1652201358. The cubic root of 631374432 is about 857.8848471581.

The spelling of 631374432 in words is "six hundred thirty-one million, three hundred seventy-four thousand, four hundred thirty-two".