31680051499 has 2 divisors, whose sum is σ = 31680051500. Its totient is φ = 31680051498.

The previous prime is 31680051467. The next prime is 31680051511. The reversal of 31680051499 is 99415008613.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31680051499 - 2⁵ = 31680051467 is a prime.

It is not a weakly prime, because it can be changed into another prime (31680051449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15840025749 + 15840025750.

It is an arithmetic number, because the mean of its divisors is an integer number (15840025750).

Almost surely, 2^31680051499 is an apocalyptic number.

31680051499 is a deficient number, since it is larger than the sum of its proper divisors (1).

31680051499 is an equidigital number, since it uses as much as digits as its factorization.

31680051499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 46.

The spelling of 31680051499 in words is "thirty-one billion, six hundred eighty million, fifty-one thousand, four hundred ninety-nine".