631077815823 has 32 divisors (see below), whose sum is σ = 1035715699200. Its totient is φ = 332843803776.

The previous prime is 631077815821. The next prime is 631077815833. The reversal of 631077815823 is 328518770136.

It is not a de Polignac number, because 631077815823 - 2¹ = 631077815821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631077815821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2838268 + ... + 3052526.

It is an arithmetic number, because the mean of its divisors is an integer number (32366115600).

Almost surely, 2^631077815823 is an apocalyptic number.

631077815823 is a deficient number, since it is larger than the sum of its proper divisors (404637883377).

631077815823 is a wasteful number, since it uses less digits than its factorization.

631077815823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225071.

The product of its (nonzero) digits is 1693440, while the sum is 51.

The spelling of 631077815823 in words is "six hundred thirty-one billion, seventy-seven million, eight hundred fifteen thousand, eight hundred twenty-three".