31922642123 has 2 divisors, whose sum is σ = 31922642124. Its totient is φ = 31922642122.

The previous prime is 31922642111. The next prime is 31922642179. The reversal of 31922642123 is 32124622913.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31922642123 - 2⁸ = 31922641867 is a prime.

It is a super-2 number, since 2×31922642123² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31922642623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15961321061 + 15961321062.

It is an arithmetic number, because the mean of its divisors is an integer number (15961321062).

Almost surely, 2^31922642123 is an apocalyptic number.

31922642123 is a deficient number, since it is larger than the sum of its proper divisors (1).

31922642123 is an equidigital number, since it uses as much as digits as its factorization.

31922642123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 35.

The spelling of 31922642123 in words is "thirty-one billion, nine hundred twenty-two million, six hundred forty-two thousand, one hundred twenty-three".