12311343 has 24 divisors (see below), whose sum is σ = 19929936. Its totient is φ = 7257600.

The previous prime is 12311339. The next prime is 12311347. The reversal of 12311343 is 34311321.

12311343 is a `hidden beast` number, since 12 + 311 + 343 = 666.

It is an interprime number because it is at equal distance from previous prime (12311339) and next prime (12311347).

It is not a de Polignac number, because 12311343 - 2² = 12311339 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12311347) 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 23 ways as a sum of consecutive naturals, for example, 1983 + ... + 5343.

It is an arithmetic number, because the mean of its divisors is an integer number (830414).

Almost surely, 2^12311343 is an apocalyptic number.

12311343 is a deficient number, since it is larger than the sum of its proper divisors (7618593).

12311343 is a wasteful number, since it uses less digits than its factorization.

12311343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3415 (or 3412 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 12311343 is about 3508.7523423576. The cubic root of 12311343 is about 230.9059604851.

Adding to 12311343 its reverse (34311321), we get a palindrome (46622664).

The spelling of 12311343 in words is "twelve million, three hundred eleven thousand, three hundred forty-three".