12243613 has 4 divisors (see below), whose sum is σ = 12775968. Its totient is φ = 11711260.

The previous prime is 12243611. The next prime is 12243661. The reversal of 12243613 is 31634221.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31634221 = 19 ⋅1664959.

It is a cyclic number.

It is not a de Polignac number, because 12243613 - 2¹ = 12243611 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12243611) 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, 266143 + ... + 266188.

It is an arithmetic number, because the mean of its divisors is an integer number (3193992).

Almost surely, 2^12243613 is an apocalyptic number.

It is an amenable number.

12243613 is a deficient number, since it is larger than the sum of its proper divisors (532355).

12243613 is an equidigital number, since it uses as much as digits as its factorization.

12243613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532354.

The product of its digits is 864, while the sum is 22.

The square root of 12243613 is about 3499.0874524653. The cubic root of 12243613 is about 230.4817438875.

Adding to 12243613 its reverse (31634221), we get a palindrome (43877834).

The spelling of 12243613 in words is "twelve million, two hundred forty-three thousand, six hundred thirteen".