631340922 has 8 divisors (see below), whose sum is σ = 1262681856. Its totient is φ = 210446972.

The previous prime is 631340909. The next prime is 631340923. The reversal of 631340922 is 229043136.

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

631340922 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 631340922.

It is not an unprimeable number, because it can be changed into a prime (631340923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52611738 + ... + 52611749.

It is an arithmetic number, because the mean of its divisors is an integer number (157835232).

Almost surely, 2^631340922 is an apocalyptic number.

631340922 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.

631340922 is a wasteful number, since it uses less digits than its factorization.

631340922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105223492.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 631340922 is about 25126.4984030804. The cubic root of 631340922 is about 857.8696695665.

The spelling of 631340922 in words is "six hundred thirty-one million, three hundred forty thousand, nine hundred twenty-two".