12397311 has 6 divisors (see below), whose sum is σ = 17907240. Its totient is φ = 8264868.

The previous prime is 12397309. The next prime is 12397313. The reversal of 12397311 is 11379321.

It is an interprime number because it is at equal distance from previous prime (12397309) and next prime (12397313).

It is not a de Polignac number, because 12397311 - 2¹ = 12397309 is a prime.

It is a super-3 number, since 3×12397311³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12397313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 688731 + ... + 688748.

It is an arithmetic number, because the mean of its divisors is an integer number (2984540).

Almost surely, 2^12397311 is an apocalyptic number.

12397311 is a deficient number, since it is larger than the sum of its proper divisors (5509929).

12397311 is a wasteful number, since it uses less digits than its factorization.

12397311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377485 (or 1377482 counting only the distinct ones).

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

The square root of 12397311 is about 3520.9815392870. The cubic root of 12397311 is about 231.4421732485.

The spelling of 12397311 in words is "twelve million, three hundred ninety-seven thousand, three hundred eleven".