31971830114831 has 2 divisors, whose sum is σ = 31971830114832. Its totient is φ = 31971830114830.

The previous prime is 31971830114827. The next prime is 31971830114891. The reversal of 31971830114831 is 13841103817913.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31971830114831 - 2² = 31971830114827 is a prime.

It is a super-2 number, since 2×31971830114831² (a number of 28 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31971830114831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31971830114891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15985915057415 + 15985915057416.

It is an arithmetic number, because the mean of its divisors is an integer number (15985915057416).

Almost surely, 2^{31971830114831} is an apocalyptic number.

31971830114831 is a deficient number, since it is larger than the sum of its proper divisors (1).

31971830114831 is an equidigital number, since it uses as much as digits as its factorization.

31971830114831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 50.

The spelling of 31971830114831 in words is "thirty-one trillion, nine hundred seventy-one billion, eight hundred thirty million, one hundred fourteen thousand, eight hundred thirty-one".