631916 has 12 divisors (see below), whose sum is σ = 1112160. Its totient is φ = 314160.

The previous prime is 631913. The next prime is 631927. The reversal of 631916 is 619136.

It is not an unprimeable number, because it can be changed into a prime (631913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 626 + ... + 1286.

It is an arithmetic number, because the mean of its divisors is an integer number (92680).

2⁶³¹⁹¹⁶ is an apocalyptic number.

It is an amenable number.

631916 is a deficient number, since it is larger than the sum of its proper divisors (480244).

631916 is a wasteful number, since it uses less digits than its factorization.

631916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904 (or 902 counting only the distinct ones).

The product of its digits is 972, while the sum is 26.

The square root of 631916 is about 794.9314435849. The cubic root of 631916 is about 85.8130063616.

The spelling of 631916 in words is "six hundred thirty-one thousand, nine hundred sixteen".