31122341291 has 2 divisors, whose sum is σ = 31122341292. Its totient is φ = 31122341290.

The previous prime is 31122341219. The next prime is 31122341323. The reversal of 31122341291 is 19214322113.

Together with previous prime (31122341219) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31122341291 - 2²⁶ = 31055232427 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (31122341491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15561170645 + 15561170646.

It is an arithmetic number, because the mean of its divisors is an integer number (15561170646).

Almost surely, 2^31122341291 is an apocalyptic number.

31122341291 is a deficient number, since it is larger than the sum of its proper divisors (1).

31122341291 is an equidigital number, since it uses as much as digits as its factorization.

31122341291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 29.

The spelling of 31122341291 in words is "thirty-one billion, one hundred twenty-two million, three hundred forty-one thousand, two hundred ninety-one".