11142331 has 2 divisors, whose sum is σ = 11142332. Its totient is φ = 11142330.

The previous prime is 11142323. The next prime is 11142353. The reversal of 11142331 is 13324111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11142331 - 2³ = 11142323 is a prime.

It is a super-2 number, since 2×11142331² = 248303080227122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11142311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5571165 + 5571166.

It is an arithmetic number, because the mean of its divisors is an integer number (5571166).

Almost surely, 2^11142331 is an apocalyptic number.

11142331 is a deficient number, since it is larger than the sum of its proper divisors (1).

11142331 is an equidigital number, since it uses as much as digits as its factorization.

11142331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72, while the sum is 16.

The square root of 11142331 is about 3338.0130317301. The cubic root of 11142331 is about 223.3531174771.

Adding to 11142331 its reverse (13324111), we get a palindrome (24466442).

The spelling of 11142331 in words is "eleven million, one hundred forty-two thousand, three hundred thirty-one".