31114405391 has 2 divisors, whose sum is σ = 31114405392. Its totient is φ = 31114405390.

The previous prime is 31114405297. The next prime is 31114405393. The reversal of 31114405391 is 19350441113.

It is a strong prime.

It is an emirp because it is prime and its reverse (19350441113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31114405391 - 2³⁴ = 13934536207 is a prime.

Together with 31114405393, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31114405393) 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, 15557202695 + 15557202696.

It is an arithmetic number, because the mean of its divisors is an integer number (15557202696).

Almost surely, 2^31114405391 is an apocalyptic number.

31114405391 is a deficient number, since it is larger than the sum of its proper divisors (1).

31114405391 is an equidigital number, since it uses as much as digits as its factorization.

31114405391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 32.

The spelling of 31114405391 in words is "thirty-one billion, one hundred fourteen million, four hundred five thousand, three hundred ninety-one".