631922732481 has 8 divisors (see below), whose sum is σ = 843431374944. Its totient is φ = 420847955840.

The previous prime is 631922732473. The next prime is 631922732509. The reversal of 631922732481 is 184237229136.

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

It is a cyclic number.

It is not a de Polignac number, because 631922732481 - 2³ = 631922732473 is a prime.

It is a super-2 number, since 2×631922732481² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 631922732481.

It is not an unprimeable number, because it can be changed into a prime (631922732431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108463056 + ... + 108468881.

It is an arithmetic number, because the mean of its divisors is an integer number (105428921868).

Almost surely, 2^631922732481 is an apocalyptic number.

It is an amenable number.

631922732481 is a deficient number, since it is larger than the sum of its proper divisors (211508642463).

631922732481 is a wasteful number, since it uses less digits than its factorization.

631922732481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216932911.

The product of its digits is 870912, while the sum is 48.

The spelling of 631922732481 in words is "six hundred thirty-one billion, nine hundred twenty-two million, seven hundred thirty-two thousand, four hundred eighty-one".