631738071 has 12 divisors (see below), whose sum is σ = 966187872. Its totient is φ = 396384576.

The previous prime is 631738031. The next prime is 631738091. The reversal of 631738071 is 170837136.

It is not a de Polignac number, because 631738071 - 2⁶ = 631738007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631738031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2064351 + ... + 2064656.

It is an arithmetic number, because the mean of its divisors is an integer number (80515656).

Almost surely, 2^631738071 is an apocalyptic number.

631738071 is a deficient number, since it is larger than the sum of its proper divisors (334449801).

631738071 is a wasteful number, since it uses less digits than its factorization.

631738071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4129030 (or 4129027 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 631738071 is about 25134.4001519829. The cubic root of 631738071 is about 858.0495146413.

The spelling of 631738071 in words is "six hundred thirty-one million, seven hundred thirty-eight thousand, seventy-one".