631967476422381 has 16 divisors (see below), whose sum is σ = 919891043358528. Its totient is φ = 382733248809600.

The previous prime is 631967476422323. The next prime is 631967476422397. The reversal of 631967476422381 is 183224674769136.

It is not a de Polignac number, because 631967476422381 - 2¹⁴ = 631967476405997 is a prime.

It is a super-2 number, since 2×631967476422381² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631967476422181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6933527776 + ... + 6933618921.

It is an arithmetic number, because the mean of its divisors is an integer number (57493190209908).

Almost surely, 2^{631967476422381} is an apocalyptic number.

It is an amenable number.

631967476422381 is a deficient number, since it is larger than the sum of its proper divisors (287923566936147).

631967476422381 is a wasteful number, since it uses less digits than its factorization.

631967476422381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13867148092.

The product of its digits is 438939648, while the sum is 69.

The spelling of 631967476422381 in words is "six hundred thirty-one trillion, nine hundred sixty-seven billion, four hundred seventy-six million, four hundred twenty-two thousand, three hundred eighty-one".