22331513 has 2 divisors, whose sum is σ = 22331514. Its totient is φ = 22331512.

The previous prime is 22331471. The next prime is 22331531. The reversal of 22331513 is 31513322.

Together with next prime (22331531) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21603904 + 727609 = 4648^2 + 853^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22331513 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (22331713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11165756 + 11165757.

It is an arithmetic number, because the mean of its divisors is an integer number (11165757).

Almost surely, 2^22331513 is an apocalyptic number.

It is an amenable number.

22331513 is a deficient number, since it is larger than the sum of its proper divisors (1).

22331513 is an equidigital number, since it uses as much as digits as its factorization.

22331513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 540, while the sum is 20.

The square root of 22331513 is about 4725.6230277076. The cubic root of 22331513 is about 281.6043653079.

Adding to 22331513 its reverse (31513322), we get a palindrome (53844835).

The spelling of 22331513 in words is "twenty-two million, three hundred thirty-one thousand, five hundred thirteen".