3131322310997 has 2 divisors, whose sum is σ = 3131322310998. Its totient is φ = 3131322310996.

The previous prime is 3131322310927. The next prime is 3131322311077. The reversal of 3131322310997 is 7990132231313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2611436608036 + 519885702961 = 1615994^2 + 721031^2 .

It is a cyclic number.

It is not a de Polignac number, because 3131322310997 - 2¹⁸ = 3131322048853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3131322310927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1565661155498 + 1565661155499.

It is an arithmetic number, because the mean of its divisors is an integer number (1565661155499).

Almost surely, 2^{3131322310997} is an apocalyptic number.

It is an amenable number.

3131322310997 is a deficient number, since it is larger than the sum of its proper divisors (1).

3131322310997 is an equidigital number, since it uses as much as digits as its factorization.

3131322310997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 183708, while the sum is 44.

The spelling of 3131322310997 in words is "three trillion, one hundred thirty-one billion, three hundred twenty-two million, three hundred ten thousand, nine hundred ninety-seven".