12232381 has 4 divisors (see below), whose sum is σ = 13979872. Its totient is φ = 10484892.

The previous prime is 12232373. The next prime is 12232397. The reversal of 12232381 is 18323221.

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: 18323221 = 7 ⋅2617603.

It is a cyclic number.

It is not a de Polignac number, because 12232381 - 2³ = 12232373 is a prime.

It is a super-2 number, since 2×12232381² = 299262289858322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12232351) 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, 873735 + ... + 873748.

It is an arithmetic number, because the mean of its divisors is an integer number (3494968).

Almost surely, 2^12232381 is an apocalyptic number.

It is an amenable number.

12232381 is a deficient number, since it is larger than the sum of its proper divisors (1747491).

12232381 is an equidigital number, since it uses as much as digits as its factorization.

12232381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1747490.

The product of its digits is 576, while the sum is 22.

The square root of 12232381 is about 3497.4820943073. The cubic root of 12232381 is about 230.4112428304.

The spelling of 12232381 in words is "twelve million, two hundred thirty-two thousand, three hundred eighty-one".