12343831 has 4 divisors (see below), whose sum is σ = 12379752. Its totient is φ = 12307912.

The previous prime is 12343817. The next prime is 12343861. The reversal of 12343831 is 13834321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13834321 = 191 ⋅72431.

It is a cyclic number.

It is not a de Polignac number, because 12343831 - 2⁷ = 12343703 is a prime.

It is a super-2 number, since 2×12343831² = 304740327513122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12343796 and 12343805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12343861) 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 3 ways as a sum of consecutive naturals, for example, 17440 + ... + 18133.

It is an arithmetic number, because the mean of its divisors is an integer number (3094938).

Almost surely, 2^12343831 is an apocalyptic number.

12343831 is a deficient number, since it is larger than the sum of its proper divisors (35921).

12343831 is an equidigital number, since it uses as much as digits as its factorization.

12343831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35920.

The product of its digits is 1728, while the sum is 25.

The square root of 12343831 is about 3513.3788580226. The cubic root of 12343831 is about 231.1088921463.

The spelling of 12343831 in words is "twelve million, three hundred forty-three thousand, eight hundred thirty-one".