31091479883 has 2 divisors, whose sum is σ = 31091479884. Its totient is φ = 31091479882.

The previous prime is 31091479841. The next prime is 31091479927. The reversal of 31091479883 is 38897419013.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31091479883 - 2¹² = 31091475787 is a prime.

It is not a weakly prime, because it can be changed into another prime (31091479813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15545739941 + 15545739942.

It is an arithmetic number, because the mean of its divisors is an integer number (15545739942).

Almost surely, 2^31091479883 is an apocalyptic number.

31091479883 is a deficient number, since it is larger than the sum of its proper divisors (1).

31091479883 is an equidigital number, since it uses as much as digits as its factorization.

31091479883 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1306368, while the sum is 53.

The spelling of 31091479883 in words is "thirty-one billion, ninety-one million, four hundred seventy-nine thousand, eight hundred eighty-three".