22311589 has 2 divisors, whose sum is σ = 22311590. Its totient is φ = 22311588.

The previous prime is 22311559. The next prime is 22311593. The reversal of 22311589 is 98511322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12180100 + 10131489 = 3490^2 + 3183^2 .

It is a cyclic number.

It is not a de Polignac number, because 22311589 - 2⁵ = 22311557 is a prime.

It is a super-3 number, since 3×22311589³ (a number of 23 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22311589.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22311559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11155794 + 11155795.

It is an arithmetic number, because the mean of its divisors is an integer number (11155795).

Almost surely, 2^22311589 is an apocalyptic number.

It is an amenable number.

22311589 is a deficient number, since it is larger than the sum of its proper divisors (1).

22311589 is an equidigital number, since it uses as much as digits as its factorization.

22311589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 31.

The square root of 22311589 is about 4723.5144754727. The cubic root of 22311589 is about 281.5205919902.

The spelling of 22311589 in words is "twenty-two million, three hundred eleven thousand, five hundred eighty-nine".