12313161 has 48 divisors (see below), whose sum is σ = 21833280. Its totient is φ = 6834240.

The previous prime is 12313157. The next prime is 12313181. The reversal of 12313161 is 16131321.

12313161 = 1⁹ + 2⁹ + ... + 6⁹.

It is not a de Polignac number, because 12313161 - 2² = 12313157 is a prime.

It is a super-2 number, since 2×12313161² = 303227867623842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12313111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 54130 + ... + 54356.

It is an arithmetic number, because the mean of its divisors is an integer number (454860).

Almost surely, 2^12313161 is an apocalyptic number.

It is an amenable number.

12313161 is a deficient number, since it is larger than the sum of its proper divisors (9520119).

12313161 is a wasteful number, since it uses less digits than its factorization.

12313161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291 (or 278 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 12313161 is about 3509.0113992405. The cubic root of 12313161 is about 230.9173257866.

Adding to 12313161 its reverse (16131321), we get a palindrome (28444482).

The spelling of 12313161 in words is "twelve million, three hundred thirteen thousand, one hundred sixty-one".