31120130310197 has 2 divisors, whose sum is σ = 31120130310198. Its totient is φ = 31120130310196.

The previous prime is 31120130310179. The next prime is 31120130310239. The reversal of 31120130310197 is 79101303102113.

Together with previous prime (31120130310179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25922669627761 + 5197460682436 = 5091431^2 + 2279794^2 .

It is a cyclic number.

It is not a de Polignac number, because 31120130310197 - 2²⁰ = 31120129261621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31120130310497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15560065155098 + 15560065155099.

It is an arithmetic number, because the mean of its divisors is an integer number (15560065155099).

Almost surely, 2^{31120130310197} is an apocalyptic number.

It is an amenable number.

31120130310197 is a deficient number, since it is larger than the sum of its proper divisors (1).

31120130310197 is an equidigital number, since it uses as much as digits as its factorization.

31120130310197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 32.

The spelling of 31120130310197 in words is "thirty-one trillion, one hundred twenty billion, one hundred thirty million, three hundred ten thousand, one hundred ninety-seven".