12315975 has 24 divisors (see below), whose sum is σ = 23272320. Its totient is φ = 5629920.

The previous prime is 12315967. The next prime is 12315991. The reversal of 12315975 is 57951321.

It is not a de Polignac number, because 12315975 - 2³ = 12315967 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11205 + ... + 12254.

It is an arithmetic number, because the mean of its divisors is an integer number (969680).

Almost surely, 2^12315975 is an apocalyptic number.

12315975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12315975 is a deficient number, since it is larger than the sum of its proper divisors (10956345).

12315975 is a wasteful number, since it uses less digits than its factorization.

12315975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23479 (or 23474 counting only the distinct ones).

The product of its digits is 9450, while the sum is 33.

The square root of 12315975 is about 3509.4123439687. The cubic root of 12315975 is about 230.9349154172.

The spelling of 12315975 in words is "twelve million, three hundred fifteen thousand, nine hundred seventy-five".