22513031309 has 2 divisors, whose sum is σ = 22513031310. Its totient is φ = 22513031308.

The previous prime is 22513031291. The next prime is 22513031323. The reversal of 22513031309 is 90313031522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14979312100 + 7533719209 = 122390^2 + 86797^2 .

It is a cyclic number.

It is not a de Polignac number, because 22513031309 - 2¹⁶ = 22512965773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22513031329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11256515654 + 11256515655.

It is an arithmetic number, because the mean of its divisors is an integer number (11256515655).

Almost surely, 2^22513031309 is an apocalyptic number.

It is an amenable number.

22513031309 is a deficient number, since it is larger than the sum of its proper divisors (1).

22513031309 is an equidigital number, since it uses as much as digits as its factorization.

22513031309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 29.

The spelling of 22513031309 in words is "twenty-two billion, five hundred thirteen million, thirty-one thousand, three hundred nine".