12233731 has 4 divisors (see below), whose sum is σ = 12416392. Its totient is φ = 12051072.

The previous prime is 12233729. The next prime is 12233743. The reversal of 12233731 is 13733221.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12233731 - 2¹ = 12233729 is a prime.

It is a super-2 number, since 2×12233731² = 299328348360722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12233231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91230 + ... + 91363.

It is an arithmetic number, because the mean of its divisors is an integer number (3104098).

Almost surely, 2^12233731 is an apocalyptic number.

12233731 is a deficient number, since it is larger than the sum of its proper divisors (182661).

12233731 is an equidigital number, since it uses as much as digits as its factorization.

12233731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182660.

The product of its digits is 756, while the sum is 22.

The square root of 12233731 is about 3497.6750849672. The cubic root of 12233731 is about 230.4197187964.

Adding to 12233731 its reverse (13733221), we get a palindrome (25966952).

The spelling of 12233731 in words is "twelve million, two hundred thirty-three thousand, seven hundred thirty-one".