12237131 has 4 divisors (see below), whose sum is σ = 12444600. Its totient is φ = 12029664.

The previous prime is 12237091. The next prime is 12237133. The reversal of 12237131 is 13173221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12237131 is a prime.

It is a super-2 number, since 2×12237131² = 299494750222322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12237133) 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, 103646 + ... + 103763.

It is an arithmetic number, because the mean of its divisors is an integer number (3111150).

Almost surely, 2^12237131 is an apocalyptic number.

12237131 is a deficient number, since it is larger than the sum of its proper divisors (207469).

12237131 is an equidigital number, since it uses as much as digits as its factorization.

12237131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207468.

The product of its digits is 252, while the sum is 20.

The square root of 12237131 is about 3498.1610883434. The cubic root of 12237131 is about 230.4410629113.

The spelling of 12237131 in words is "twelve million, two hundred thirty-seven thousand, one hundred thirty-one".