31922642623 has 2 divisors, whose sum is σ = 31922642624. Its totient is φ = 31922642622.

The previous prime is 31922642617. The next prime is 31922642711. The reversal of 31922642623 is 32624622913.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31922642623 - 2⁹ = 31922642111 is a prime.

It is a super-2 number, since 2×31922642623² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31922642123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15961321311 + 15961321312.

It is an arithmetic number, because the mean of its divisors is an integer number (15961321312).

Almost surely, 2^31922642623 is an apocalyptic number.

31922642623 is a deficient number, since it is larger than the sum of its proper divisors (1).

31922642623 is an equidigital number, since it uses as much as digits as its factorization.

31922642623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 40.

The spelling of 31922642623 in words is "thirty-one billion, nine hundred twenty-two million, six hundred forty-two thousand, six hundred twenty-three".