31845365623 has 2 divisors, whose sum is σ = 31845365624. Its totient is φ = 31845365622.

The previous prime is 31845365603. The next prime is 31845365801. The reversal of 31845365623 is 32656354813.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31845365623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31845365603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15922682811 + 15922682812.

It is an arithmetic number, because the mean of its divisors is an integer number (15922682812).

Almost surely, 2^31845365623 is an apocalyptic number.

31845365623 is a deficient number, since it is larger than the sum of its proper divisors (1).

31845365623 is an equidigital number, since it uses as much as digits as its factorization.

31845365623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1555200, while the sum is 46.

The spelling of 31845365623 in words is "thirty-one billion, eight hundred forty-five million, three hundred sixty-five thousand, six hundred twenty-three".