12171313 has 16 divisors (see below), whose sum is σ = 15667200. Its totient is φ = 9176400.

The previous prime is 12171311. The next prime is 12171319. The reversal of 12171313 is 31317121.

12171313 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12171313 - 2¹ = 12171311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12171311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163 + ... + 4936.

It is an arithmetic number, because the mean of its divisors is an integer number (979200).

Almost surely, 2^12171313 is an apocalyptic number.

It is an amenable number.

12171313 is a deficient number, since it is larger than the sum of its proper divisors (3495887).

12171313 is a wasteful number, since it uses less digits than its factorization.

12171313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5148.

The product of its digits is 126, while the sum is 19.

The square root of 12171313 is about 3488.7408903500. The cubic root of 12171313 is about 230.0271738530.

Adding to 12171313 its reverse (31317121), we get a palindrome (43488434).

The spelling of 12171313 in words is "twelve million, one hundred seventy-one thousand, three hundred thirteen".