31837140761 has 2 divisors, whose sum is σ = 31837140762. Its totient is φ = 31837140760.

The previous prime is 31837140739. The next prime is 31837140763. The reversal of 31837140761 is 16704173813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17330142736 + 14506998025 = 131644^2 + 120445^2 .

It is a cyclic number.

It is not a de Polignac number, because 31837140761 - 2²⁶ = 31770031897 is a prime.

Together with 31837140763, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (31837140763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15918570380 + 15918570381.

It is an arithmetic number, because the mean of its divisors is an integer number (15918570381).

Almost surely, 2^31837140761 is an apocalyptic number.

It is an amenable number.

31837140761 is a deficient number, since it is larger than the sum of its proper divisors (1).

31837140761 is an equidigital number, since it uses as much as digits as its factorization.

31837140761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 41.

The spelling of 31837140761 in words is "thirty-one billion, eight hundred thirty-seven million, one hundred forty thousand, seven hundred sixty-one".