22031321539 has 2 divisors, whose sum is σ = 22031321540. Its totient is φ = 22031321538.

The previous prime is 22031321531. The next prime is 22031321549. The reversal of 22031321539 is 93512313022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22031321539 - 2³ = 22031321531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22031321539.

It is not a weakly prime, because it can be changed into another prime (22031321531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11015660769 + 11015660770.

It is an arithmetic number, because the mean of its divisors is an integer number (11015660770).

Almost surely, 2^22031321539 is an apocalyptic number.

22031321539 is a deficient number, since it is larger than the sum of its proper divisors (1).

22031321539 is an equidigital number, since it uses as much as digits as its factorization.

22031321539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 31.

The spelling of 22031321539 in words is "twenty-two billion, thirty-one million, three hundred twenty-one thousand, five hundred thirty-nine".