22785313 has 12 divisors (see below), whose sum is σ = 24690160. Its totient is φ = 20957832.

The previous prime is 22785307. The next prime is 22785317. The reversal of 22785313 is 31358722.

It is a de Polignac number, because none of the positive numbers 2^k-22785313 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22785317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136356 + ... + 136522.

Almost surely, 2^22785313 is an apocalyptic number.

It is an amenable number.

22785313 is a deficient number, since it is larger than the sum of its proper divisors (1904847).

22785313 is an equidigital number, since it uses as much as digits as its factorization.

22785313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396 (or 229 counting only the distinct ones).

The product of its digits is 10080, while the sum is 31.

The square root of 22785313 is about 4773.3963799375. The cubic root of 22785313 is about 283.4990880944.

The spelling of 22785313 in words is "twenty-two million, seven hundred eighty-five thousand, three hundred thirteen".