631319513882 has 4 divisors (see below), whose sum is σ = 946979270826. Its totient is φ = 315659756940.

The previous prime is 631319513857. The next prime is 631319513893. The reversal of 631319513882 is 288315913136.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 630088275961 + 1231237921 = 793781^2 + 35089^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 631319513882.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157829878469 + ... + 157829878472.

Almost surely, 2^631319513882 is an apocalyptic number.

631319513882 is a deficient number, since it is larger than the sum of its proper divisors (315659756944).

631319513882 is a wasteful number, since it uses less digits than its factorization.

631319513882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315659756943.

The product of its digits is 933120, while the sum is 50.

The spelling of 631319513882 in words is "six hundred thirty-one billion, three hundred nineteen million, five hundred thirteen thousand, eight hundred eighty-two".