12039131 has 4 divisors (see below), whose sum is σ = 12965232. Its totient is φ = 11113032.

The previous prime is 12039113. The next prime is 12039173. The reversal of 12039131 is 13193021.

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-12039131 is a prime.

It is a super-2 number, since 2×12039131² = 289881350470322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12030131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 463031 + ... + 463056.

It is an arithmetic number, because the mean of its divisors is an integer number (3241308).

Almost surely, 2^12039131 is an apocalyptic number.

12039131 is a deficient number, since it is larger than the sum of its proper divisors (926101).

12039131 is an equidigital number, since it uses as much as digits as its factorization.

12039131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926100.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 12039131 is about 3469.7450915017. The cubic root of 12039131 is about 229.1914330185.

The spelling of 12039131 in words is "twelve million, thirty-nine thousand, one hundred thirty-one".