12237913 has 4 divisors (see below), whose sum is σ = 12659940. Its totient is φ = 11815888.

The previous prime is 12237899. The next prime is 12237917. The reversal of 12237913 is 31973221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5745609 + 6492304 = 2397^2 + 2548^2 .

It is a cyclic number.

It is not a de Polignac number, because 12237913 - 2²¹ = 10140761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12237917) 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, 210970 + ... + 211027.

It is an arithmetic number, because the mean of its divisors is an integer number (3164985).

Almost surely, 2^12237913 is an apocalyptic number.

It is an amenable number.

12237913 is a deficient number, since it is larger than the sum of its proper divisors (422027).

12237913 is an equidigital number, since it uses as much as digits as its factorization.

12237913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422026.

The product of its digits is 2268, while the sum is 28.

The square root of 12237913 is about 3498.2728595694. The cubic root of 12237913 is about 230.4459714984.

The spelling of 12237913 in words is "twelve million, two hundred thirty-seven thousand, nine hundred thirteen".