12240313 has 4 divisors (see below), whose sum is σ = 12884560. Its totient is φ = 11596068.

The previous prime is 12240311. The next prime is 12240341. The reversal of 12240313 is 31304221.

It is a happy number.

12240313 is nontrivially palindromic in base 14.

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 12240313 - 2¹ = 12240311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12240311) 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, 322095 + ... + 322132.

It is an arithmetic number, because the mean of its divisors is an integer number (3221140).

Almost surely, 2^12240313 is an apocalyptic number.

It is an amenable number.

12240313 is a deficient number, since it is larger than the sum of its proper divisors (644247).

12240313 is an equidigital number, since it uses as much as digits as its factorization.

12240313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644246.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 12240313 is about 3498.6158691688. The cubic root of 12240313 is about 230.4610349106.

Adding to 12240313 its reverse (31304221), we get a palindrome (43544534).

The spelling of 12240313 in words is "twelve million, two hundred forty thousand, three hundred thirteen".