631457420 has 48 divisors (see below), whose sum is σ = 1448381088. Its totient is φ = 229340160.

The previous prime is 631457413. The next prime is 631457459. The reversal of 631457420 is 24754136.

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 in 15 ways as a sum of consecutive naturals, for example, 284234 + ... + 286446.

It is an arithmetic number, because the mean of its divisors is an integer number (30174606).

Almost surely, 2^631457420 is an apocalyptic number.

It is an amenable number.

631457420 is an abundant number, since it is smaller than the sum of its proper divisors (816923668).

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

631457420 is a wasteful number, since it uses less digits than its factorization.

631457420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3530 (or 3528 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 631457420 is about 25128.8165260523. The cubic root of 631457420 is about 857.9224323717.

The spelling of 631457420 in words is "six hundred thirty-one million, four hundred fifty-seven thousand, four hundred twenty".