12032381 has 8 divisors (see below), whose sum is σ = 12591744. Its totient is φ = 11476080.

The previous prime is 12032351. The next prime is 12032399. The reversal of 12032381 is 18323021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-12032381 is a prime.

It is a super-2 number, since 2×12032381² = 289556385058322, 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 (12032341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11960 + ... + 12926.

It is an arithmetic number, because the mean of its divisors is an integer number (1573968).

Almost surely, 2^12032381 is an apocalyptic number.

It is an amenable number.

12032381 is a deficient number, since it is larger than the sum of its proper divisors (559363).

12032381 is an equidigital number, since it uses as much as digits as its factorization.

12032381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 12032381 is about 3468.7722611898. The cubic root of 12032381 is about 229.1485912943.

The spelling of 12032381 in words is "twelve million, thirty-two thousand, three hundred eighty-one".