31116959 has 2 divisors, whose sum is σ = 31116960. Its totient is φ = 31116958.

The previous prime is 31116887. The next prime is 31116997. The reversal of 31116959 is 95961113.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31116959 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31116359) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15558479 + 15558480.

It is an arithmetic number, because the mean of its divisors is an integer number (15558480).

Almost surely, 2^31116959 is an apocalyptic number.

31116959 is a deficient number, since it is larger than the sum of its proper divisors (1).

31116959 is an equidigital number, since it uses as much as digits as its factorization.

31116959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7290, while the sum is 35.

The square root of 31116959 is about 5578.2577029033. The cubic root of 31116959 is about 314.5326368938.

The spelling of 31116959 in words is "thirty-one million, one hundred sixteen thousand, nine hundred fifty-nine".