31099912579 has 2 divisors, whose sum is σ = 31099912580. Its totient is φ = 31099912578.

The previous prime is 31099912567. The next prime is 31099912589. The reversal of 31099912579 is 97521999013.

It is a strong prime.

It is an emirp because it is prime and its reverse (97521999013) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31099912579 is a prime.

It is not a weakly prime, because it can be changed into another prime (31099912589) 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, 15549956289 + 15549956290.

It is an arithmetic number, because the mean of its divisors is an integer number (15549956290).

Almost surely, 2^31099912579 is an apocalyptic number.

31099912579 is a deficient number, since it is larger than the sum of its proper divisors (1).

31099912579 is an equidigital number, since it uses as much as digits as its factorization.

31099912579 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1377810, while the sum is 55.

The spelling of 31099912579 in words is "thirty-one billion, ninety-nine million, nine hundred twelve thousand, five hundred seventy-nine".