631147494 has 8 divisors (see below), whose sum is σ = 1262295000. Its totient is φ = 210382496.

The previous prime is 631147487. The next prime is 631147499. The reversal of 631147494 is 494741136.

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

631147494 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631147499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52595619 + ... + 52595630.

It is an arithmetic number, because the mean of its divisors is an integer number (157786875).

Almost surely, 2^631147494 is an apocalyptic number.

631147494 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.

631147494 is a wasteful number, since it uses less digits than its factorization.

631147494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105191254.

The product of its digits is 72576, while the sum is 39.

The square root of 631147494 is about 25122.6490243366. The cubic root of 631147494 is about 857.7820502587.

The spelling of 631147494 in words is "six hundred thirty-one million, one hundred forty-seven thousand, four hundred ninety-four".