12312013 has 8 divisors (see below), whose sum is σ = 14414400. Its totient is φ = 10295520.

The previous prime is 12312011. The next prime is 12312017. The reversal of 12312013 is 31021321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12312013 - 2¹ = 12312011 is a prime.

It is a super-2 number, since 2×12312013² = 303171328224338, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12311984 and 12312002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12312011) 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 7 ways as a sum of consecutive naturals, for example, 21163 + ... + 21736.

It is an arithmetic number, because the mean of its divisors is an integer number (1801800).

Almost surely, 2^12312013 is an apocalyptic number.

It is an amenable number.

12312013 is a deficient number, since it is larger than the sum of its proper divisors (2102387).

12312013 is an equidigital number, since it uses as much as digits as its factorization.

12312013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42947.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 12312013 is about 3508.8478165917. The cubic root of 12312013 is about 230.9101491477.

Adding to 12312013 its reverse (31021321), we get a palindrome (43333334).

The spelling of 12312013 in words is "twelve million, three hundred twelve thousand, thirteen".