31298791944377 has 2 divisors, whose sum is σ = 31298791944378. Its totient is φ = 31298791944376.

The previous prime is 31298791944353. The next prime is 31298791944443. The reversal of 31298791944377 is 77344919789213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18985226697616 + 12313565246761 = 4357204^2 + 3509069^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31298791944377 is a prime.

It is a super-2 number, since 2×31298791944377² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31298721944377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15649395972188 + 15649395972189.

It is an arithmetic number, because the mean of its divisors is an integer number (15649395972189).

Almost surely, 2^{31298791944377} is an apocalyptic number.

It is an amenable number.

31298791944377 is a deficient number, since it is larger than the sum of its proper divisors (1).

31298791944377 is an equidigital number, since it uses as much as digits as its factorization.

31298791944377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576108288, while the sum is 74.

The spelling of 31298791944377 in words is "thirty-one trillion, two hundred ninety-eight billion, seven hundred ninety-one million, nine hundred forty-four thousand, three hundred seventy-seven".