22031315591 has 2 divisors, whose sum is σ = 22031315592. Its totient is φ = 22031315590.

The previous prime is 22031315513. The next prime is 22031315599. The reversal of 22031315591 is 19551313022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22031315591 - 2¹⁰ = 22031314567 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22031315599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11015657795 + 11015657796.

It is an arithmetic number, because the mean of its divisors is an integer number (11015657796).

Almost surely, 2^22031315591 is an apocalyptic number.

22031315591 is a deficient number, since it is larger than the sum of its proper divisors (1).

22031315591 is an equidigital number, since it uses as much as digits as its factorization.

22031315591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8100, while the sum is 32.

The spelling of 22031315591 in words is "twenty-two billion, thirty-one million, three hundred fifteen thousand, five hundred ninety-one".