12311739 has 24 divisors (see below), whose sum is σ = 20247552. Its totient is φ = 7135920.

The previous prime is 12311731. The next prime is 12311759. The reversal of 12311739 is 93711321.

It is not a de Polignac number, because 12311739 - 2³ = 12311731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12311731) 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, 427 + ... + 4980.

It is an arithmetic number, because the mean of its divisors is an integer number (843648).

Almost surely, 2^12311739 is an apocalyptic number.

12311739 is a deficient number, since it is larger than the sum of its proper divisors (7935813).

12311739 is a wasteful number, since it uses less digits than its factorization.

12311739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5447 (or 5444 counting only the distinct ones).

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

The square root of 12311739 is about 3508.8087722189. The cubic root of 12311739 is about 230.9084361906.

The spelling of 12311739 in words is "twelve million, three hundred eleven thousand, seven hundred thirty-nine".