631222132164423 has 4 divisors (see below), whose sum is σ = 841629509552568. Its totient is φ = 420814754776280.

The previous prime is 631222132164419. The next prime is 631222132164457. The reversal of 631222132164423 is 324461231222136.

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 631222132164423 - 2² = 631222132164419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631222132163423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105203688694068 + ... + 105203688694073.

It is an arithmetic number, because the mean of its divisors is an integer number (210407377388142).

Almost surely, 2^{631222132164423} is an apocalyptic number.

631222132164423 is a deficient number, since it is larger than the sum of its proper divisors (210407377388145).

631222132164423 is a wasteful number, since it uses less digits than its factorization.

631222132164423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210407377388144.

The product of its digits is 497664, while the sum is 42.

Adding to 631222132164423 its reverse (324461231222136), we get a palindrome (955683363386559).

The spelling of 631222132164423 in words is "six hundred thirty-one trillion, two hundred twenty-two billion, one hundred thirty-two million, one hundred sixty-four thousand, four hundred twenty-three".