12813975 has 18 divisors (see below), whose sum is σ = 22951656. Its totient is φ = 6834000.

The previous prime is 12813973. The next prime is 12813979. The reversal of 12813975 is 57931821.

12813975 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12813975 - 2¹ = 12813973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12813973) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 28251 + ... + 28700.

It is an arithmetic number, because the mean of its divisors is an integer number (1275092).

Almost surely, 2^12813975 is an apocalyptic number.

12813975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12813975 is a deficient number, since it is larger than the sum of its proper divisors (10137681).

12813975 is a wasteful number, since it uses less digits than its factorization.

12813975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56967 (or 56959 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 12813975 is about 3579.6612968268. The cubic root of 12813975 is about 234.0065196518.

The spelling of 12813975 in words is "twelve million, eight hundred thirteen thousand, nine hundred seventy-five".