12142331 has 2 divisors, whose sum is σ = 12142332. Its totient is φ = 12142330.

The previous prime is 12142289. The next prime is 12142337. The reversal of 12142331 is 13324121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12142331 is a prime.

It is a super-2 number, since 2×12142331² = 294872404227122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12142337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6071165 + 6071166.

It is an arithmetic number, because the mean of its divisors is an integer number (6071166).

Almost surely, 2^12142331 is an apocalyptic number.

12142331 is a deficient number, since it is larger than the sum of its proper divisors (1).

12142331 is an equidigital number, since it uses as much as digits as its factorization.

12142331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144, while the sum is 17.

The square root of 12142331 is about 3484.5847672284. The cubic root of 12142331 is about 229.8444505910.

Adding to 12142331 its reverse (13324121), we get a palindrome (25466452).

The spelling of 12142331 in words is "twelve million, one hundred forty-two thousand, three hundred thirty-one".