631672071 has 16 divisors (see below), whose sum is σ = 862502400. Its totient is φ = 411098688.

The previous prime is 631672061. The next prime is 631672121. The reversal of 631672071 is 170276136.

It is not a de Polignac number, because 631672071 - 2⁶ = 631672007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631672001) 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, 6120 + ... + 36066.

It is an arithmetic number, because the mean of its divisors is an integer number (53906400).

Almost surely, 2^631672071 is an apocalyptic number.

631672071 is a deficient number, since it is larger than the sum of its proper divisors (230830329).

631672071 is a wasteful number, since it uses less digits than its factorization.

631672071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30118.

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 631672071 is about 25133.0871760713. The cubic root of 631672071 is about 858.0196324043.

It can be divided in two parts, 6316 and 72071, that added together give a palindrome (78387).

The spelling of 631672071 in words is "six hundred thirty-one million, six hundred seventy-two thousand, seventy-one".