12040331 has 2 divisors, whose sum is σ = 12040332. Its totient is φ = 12040330.

The previous prime is 12040309. The next prime is 12040337. The reversal of 12040331 is 13304021.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12040331 is a prime.

It is a super-2 number, since 2×12040331² = 289939141179122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12040337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6020165 + 6020166.

It is an arithmetic number, because the mean of its divisors is an integer number (6020166).

Almost surely, 2^12040331 is an apocalyptic number.

12040331 is a deficient number, since it is larger than the sum of its proper divisors (1).

12040331 is an equidigital number, since it uses as much as digits as its factorization.

12040331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 12040331 is about 3469.9180105588. The cubic root of 12040331 is about 229.1990476484.

Adding to 12040331 its reverse (13304021), we get a palindrome (25344352).

The spelling of 12040331 in words is "twelve million, forty thousand, three hundred thirty-one".