31114691 has 2 divisors, whose sum is σ = 31114692. Its totient is φ = 31114690.

The previous prime is 31114687. The next prime is 31114711. The reversal of 31114691 is 19641113.

It is a weak prime.

It is an emirp because it is prime and its reverse (19641113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31114691 - 2² = 31114687 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31114691.

It is not a weakly prime, because it can be changed into another prime (31114621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15557345 + 15557346.

It is an arithmetic number, because the mean of its divisors is an integer number (15557346).

Almost surely, 2^31114691 is an apocalyptic number.

31114691 is a deficient number, since it is larger than the sum of its proper divisors (1).

31114691 is an equidigital number, since it uses as much as digits as its factorization.

31114691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 26.

The square root of 31114691 is about 5578.0544099175. The cubic root of 31114691 is about 314.5249950015.

The spelling of 31114691 in words is "thirty-one million, one hundred fourteen thousand, six hundred ninety-one".