31679880311 has 2 divisors, whose sum is σ = 31679880312. Its totient is φ = 31679880310.

The previous prime is 31679880301. The next prime is 31679880317. The reversal of 31679880311 is 11308897613.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31679880311 is a prime.

It is a super-2 number, since 2×31679880311² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31679880317) 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, 15839940155 + 15839940156.

It is an arithmetic number, because the mean of its divisors is an integer number (15839940156).

Almost surely, 2^31679880311 is an apocalyptic number.

31679880311 is a deficient number, since it is larger than the sum of its proper divisors (1).

31679880311 is an equidigital number, since it uses as much as digits as its factorization.

31679880311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 47.

The spelling of 31679880311 in words is "thirty-one billion, six hundred seventy-nine million, eight hundred eighty thousand, three hundred eleven".