31612181063 has 2 divisors, whose sum is σ = 31612181064. Its totient is φ = 31612181062.

The previous prime is 31612181053. The next prime is 31612181123. The reversal of 31612181063 is 36018121613.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31612181063 - 2²⁶ = 31545072199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31612181053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15806090531 + 15806090532.

It is an arithmetic number, because the mean of its divisors is an integer number (15806090532).

Almost surely, 2^31612181063 is an apocalyptic number.

31612181063 is a deficient number, since it is larger than the sum of its proper divisors (1).

31612181063 is an equidigital number, since it uses as much as digits as its factorization.

31612181063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The spelling of 31612181063 in words is "thirty-one billion, six hundred twelve million, one hundred eighty-one thousand, sixty-three".