383397875631 has 12 divisors (see below), whose sum is σ = 553920247608. Its totient is φ = 255541668624.

The previous prime is 383397875603. The next prime is 383397875683. The reversal of 383397875631 is 136578793383.

383397875631 is a `hidden beast` number, since 38 + 3 + 39 + 7 + 8 + 7 + 563 + 1 = 666.

It is not a de Polignac number, because 383397875631 - 2⁷ = 383397875503 is a prime.

It is a super-2 number, since 2×383397875631² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (383397874631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4700245 + ... + 4781118.

It is an arithmetic number, because the mean of its divisors is an integer number (46160020634).

Almost surely, 2^383397875631 is an apocalyptic number.

383397875631 is a deficient number, since it is larger than the sum of its proper divisors (170522371977).

383397875631 is a wasteful number, since it uses less digits than its factorization.

383397875631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9485862 (or 9485859 counting only the distinct ones).

The product of its digits is 68584320, while the sum is 63.

The spelling of 383397875631 in words is "three hundred eighty-three billion, three hundred ninety-seven million, eight hundred seventy-five thousand, six hundred thirty-one".