31114021457 has 2 divisors, whose sum is σ = 31114021458. Its totient is φ = 31114021456.

The previous prime is 31114021417. The next prime is 31114021481. The reversal of 31114021457 is 75412041113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30583364161 + 530657296 = 174881^2 + 23036^2 .

It is a cyclic number.

It is not a de Polignac number, because 31114021457 - 2¹⁶ = 31113955921 is a prime.

It is not a weakly prime, because it can be changed into another prime (31114021417) 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, 15557010728 + 15557010729.

It is an arithmetic number, because the mean of its divisors is an integer number (15557010729).

Almost surely, 2^31114021457 is an apocalyptic number.

It is an amenable number.

31114021457 is a deficient number, since it is larger than the sum of its proper divisors (1).

31114021457 is an equidigital number, since it uses as much as digits as its factorization.

31114021457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 29.

The spelling of 31114021457 in words is "thirty-one billion, one hundred fourteen million, twenty-one thousand, four hundred fifty-seven".