631671356 has 24 divisors (see below), whose sum is σ = 1163713824. Its totient is φ = 299425280.

The previous prime is 631671349. The next prime is 631671371. The reversal of 631671356 is 653176136.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19985 + ... + 40776.

It is an arithmetic number, because the mean of its divisors is an integer number (48488076).

Almost surely, 2^631671356 is an apocalyptic number.

It is an amenable number.

631671356 is a deficient number, since it is larger than the sum of its proper divisors (532042468).

631671356 is a wasteful number, since it uses less digits than its factorization.

631671356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60901 (or 60899 counting only the distinct ones).

The product of its digits is 68040, while the sum is 38.

The square root of 631671356 is about 25133.0729517900. The cubic root of 631671356 is about 858.0193086687.

The spelling of 631671356 in words is "six hundred thirty-one million, six hundred seventy-one thousand, three hundred fifty-six".