12173913 has 6 divisors (see below), whose sum is σ = 17584554. Its totient is φ = 8115936.

The previous prime is 12173899. The next prime is 12173933. The reversal of 12173913 is 31937121.

12173913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 11108889 + 1065024 = 3333^2 + 1032^2 .

It is not a de Polignac number, because 12173913 - 2⁸ = 12173657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12173933) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 676320 + ... + 676337.

It is an arithmetic number, because the mean of its divisors is an integer number (2930759).

Almost surely, 2^12173913 is an apocalyptic number.

It is an amenable number.

12173913 is a deficient number, since it is larger than the sum of its proper divisors (5410641).

12173913 is a wasteful number, since it uses less digits than its factorization.

12173913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352663 (or 1352660 counting only the distinct ones).

The product of its digits is 1134, while the sum is 27.

The square root of 12173913 is about 3489.1134977240. The cubic root of 12173913 is about 230.0435519291.

The spelling of 12173913 in words is "twelve million, one hundred seventy-three thousand, nine hundred thirteen".