22131315 has 24 divisors (see below), whose sum is σ = 38626848. Its totient is φ = 11721600.

The previous prime is 22131289. The next prime is 22131397. The reversal of 22131315 is 51313122.

It is not a de Polignac number, because 22131315 - 2⁹ = 22130803 is a prime.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 5167 + ... + 8423.

It is an arithmetic number, because the mean of its divisors is an integer number (1609452).

Almost surely, 2^22131315 is an apocalyptic number.

22131315 is a deficient number, since it is larger than the sum of its proper divisors (16495533).

22131315 is a wasteful number, since it uses less digits than its factorization.

22131315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3419 (or 3416 counting only the distinct ones).

The product of its digits is 180, while the sum is 18.

The square root of 22131315 is about 4704.3931595903. The cubic root of 22131315 is about 280.7603272049.

Adding to 22131315 its reverse (51313122), we get a palindrome (73444437).

The spelling of 22131315 in words is "twenty-two million, one hundred thirty-one thousand, three hundred fifteen".