22331313 has 12 divisors (see below), whose sum is σ = 33128628. Its totient is φ = 14484960.

The previous prime is 22331303. The next prime is 22331333. The reversal of 22331313 is 31313322.

22331313 is a `hidden beast` number, since 22 + 331 + 313 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 14311089 + 8020224 = 3783^2 + 2832^2 .

It is not a de Polignac number, because 22331313 - 2⁴ = 22331297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22331303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33198 + ... + 33863.

It is an arithmetic number, because the mean of its divisors is an integer number (2760719).

Almost surely, 2^22331313 is an apocalyptic number.

It is an amenable number.

22331313 is a deficient number, since it is larger than the sum of its proper divisors (10797315).

22331313 is a wasteful number, since it uses less digits than its factorization.

22331313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67104 (or 67101 counting only the distinct ones).

The product of its digits is 324, while the sum is 18.

The square root of 22331313 is about 4725.6018664293. The cubic root of 22331313 is about 281.6035246269.

Adding to 22331313 its reverse (31313322), we get a palindrome (53644635).

Subtracting 22331313 from its reverse (31313322), we obtain a square (8982009 = 2997²).

The spelling of 22331313 in words is "twenty-two million, three hundred thirty-one thousand, three hundred thirteen".