31536368923 has 2 divisors, whose sum is σ = 31536368924. Its totient is φ = 31536368922.

The previous prime is 31536368911. The next prime is 31536368953. The reversal of 31536368923 is 32986363513.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31536368923 - 2⁹ = 31536368411 is a prime.

It is not a weakly prime, because it can be changed into another prime (31536368953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15768184461 + 15768184462.

It is an arithmetic number, because the mean of its divisors is an integer number (15768184462).

Almost surely, 2^31536368923 is an apocalyptic number.

31536368923 is a deficient number, since it is larger than the sum of its proper divisors (1).

31536368923 is an equidigital number, since it uses as much as digits as its factorization.

31536368923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2099520, while the sum is 49.

The spelling of 31536368923 in words is "thirty-one billion, five hundred thirty-six million, three hundred sixty-eight thousand, nine hundred twenty-three".