631371 has 8 divisors (see below), whose sum is σ = 906640. Its totient is φ = 388512.

The previous prime is 631361. The next prime is 631387. The reversal of 631371 is 173136.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 631371 - 2⁵ = 631339 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8056 + ... + 8133.

It is an arithmetic number, because the mean of its divisors is an integer number (113330).

2⁶³¹³⁷¹ is an apocalyptic number.

631371 is a deficient number, since it is larger than the sum of its proper divisors (275269).

631371 is a wasteful number, since it uses less digits than its factorization.

631371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16205.

The product of its digits is 378, while the sum is 21.

The square root of 631371 is about 794.5885727847. The cubic root of 631371 is about 85.7883292736.

The spelling of 631371 in words is "six hundred thirty-one thousand, three hundred seventy-one".