12045331 has 4 divisors (see below), whose sum is σ = 12071592. Its totient is φ = 12019072.

The previous prime is 12045317. The next prime is 12045343. The reversal of 12045331 is 13354021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13354021 = 1103 ⋅12107.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12045331 is a prime.

It is a super-2 number, since 2×12045331² = 290179997799122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12045299 and 12045308.

It is not an unprimeable number, because it can be changed into a prime (12040331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12430 + ... + 13363.

It is an arithmetic number, because the mean of its divisors is an integer number (3017898).

Almost surely, 2^12045331 is an apocalyptic number.

12045331 is a deficient number, since it is larger than the sum of its proper divisors (26261).

12045331 is an equidigital number, since it uses as much as digits as its factorization.

12045331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26260.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 12045331 is about 3470.6384138945. The cubic root of 12045331 is about 229.2307698285.

Adding to 12045331 its reverse (13354021), we get a palindrome (25399352).

It can be divided in two parts, 120 and 45331, that added together give a triangular number (45451 = T₃₀₁).

The spelling of 12045331 in words is "twelve million, forty-five thousand, three hundred thirty-one".