631387914 has 8 divisors (see below), whose sum is σ = 1262775840. Its totient is φ = 210462636.

The previous prime is 631387891. The next prime is 631387937. The reversal of 631387914 is 419783136.

It is an interprime number because it is at equal distance from previous prime (631387891) and next prime (631387937).

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

631387914 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52615654 + ... + 52615665.

It is an arithmetic number, because the mean of its divisors is an integer number (157846980).

Almost surely, 2^631387914 is an apocalyptic number.

631387914 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

631387914 is a wasteful number, since it uses less digits than its factorization.

631387914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105231324.

The product of its digits is 108864, while the sum is 42.

The square root of 631387914 is about 25127.4334940917. The cubic root of 631387914 is about 857.8909533715.

The spelling of 631387914 in words is "six hundred thirty-one million, three hundred eighty-seven thousand, nine hundred fourteen".