12304013 has 4 divisors (see below), whose sum is σ = 12459840. Its totient is φ = 12148188.

The previous prime is 12303997. The next prime is 12304021. The reversal of 12304013 is 31040321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12304013 - 2⁴ = 12303997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12306013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77795 + ... + 77952.

It is an arithmetic number, because the mean of its divisors is an integer number (3114960).

Almost surely, 2^12304013 is an apocalyptic number.

It is an amenable number.

12304013 is a deficient number, since it is larger than the sum of its proper divisors (155827).

12304013 is an equidigital number, since it uses as much as digits as its factorization.

12304013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155826.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 12304013 is about 3507.7076560056. The cubic root of 12304013 is about 230.8601253365.

Adding to 12304013 its reverse (31040321), we get a palindrome (43344334).

The spelling of 12304013 in words is "twelve million, three hundred four thousand, thirteen".