23157315 has 24 divisors (see below), whose sum is σ = 42501888. Its totient is φ = 11623680.

The previous prime is 23157313. The next prime is 23157331. The reversal of 23157315 is 51375132.

It is not a de Polignac number, because 23157315 - 2¹ = 23157313 is a prime.

It is a super-2 number, since 2×23157315² = 1072522476018450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23157311) 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 in 23 ways as a sum of consecutive naturals, for example, 14371 + ... + 15900.

It is an arithmetic number, because the mean of its divisors is an integer number (1770912).

Almost surely, 2^23157315 is an apocalyptic number.

23157315 is a deficient number, since it is larger than the sum of its proper divisors (19344573).

23157315 is a wasteful number, since it uses less digits than its factorization.

23157315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30299 (or 30296 counting only the distinct ones).

The product of its digits is 3150, while the sum is 27.

The square root of 23157315 is about 4812.2047961407. The cubic root of 23157315 is about 285.0336063787.

The spelling of 23157315 in words is "twenty-three million, one hundred fifty-seven thousand, three hundred fifteen".