31682021923 has 2 divisors, whose sum is σ = 31682021924. Its totient is φ = 31682021922.

The previous prime is 31682021897. The next prime is 31682021971. The reversal of 31682021923 is 32912028613.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31682021923 - 2²⁵ = 31648467491 is a prime.

It is not a weakly prime, because it can be changed into another prime (31682022923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15841010961 + 15841010962.

It is an arithmetic number, because the mean of its divisors is an integer number (15841010962).

Almost surely, 2^31682021923 is an apocalyptic number.

31682021923 is a deficient number, since it is larger than the sum of its proper divisors (1).

31682021923 is an equidigital number, since it uses as much as digits as its factorization.

31682021923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 31682021923 in words is "thirty-one billion, six hundred eighty-two million, twenty-one thousand, nine hundred twenty-three".