631224053231 has 4 divisors (see below), whose sum is σ = 639214231200. Its totient is φ = 623233875264.

The previous prime is 631224053183. The next prime is 631224053281. The reversal of 631224053231 is 132350422136.

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

It is a cyclic number.

It is not a de Polignac number, because 631224053231 - 2¹⁴ = 631224036847 is a prime.

It is a super-2 number, since 2×631224053231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631224053281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3995088866 + ... + 3995089023.

It is an arithmetic number, because the mean of its divisors is an integer number (159803557800).

Almost surely, 2^631224053231 is an apocalyptic number.

631224053231 is a deficient number, since it is larger than the sum of its proper divisors (7990177969).

631224053231 is an equidigital number, since it uses as much as digits as its factorization.

631224053231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7990177968.

The product of its (nonzero) digits is 25920, while the sum is 32.

Adding to 631224053231 its reverse (132350422136), we get a palindrome (763574475367).

The spelling of 631224053231 in words is "six hundred thirty-one billion, two hundred twenty-four million, fifty-three thousand, two hundred thirty-one".