3111331 has 2 divisors, whose sum is σ = 3111332. Its totient is φ = 3111330.

The previous prime is 3111319. The next prime is 3111337. The reversal of 3111331 is 1331113.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3111331 - 2⁵ = 3111299 is a prime.

It is a super-2 number, since 2×3111331² = 19360761183122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3111337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1555665 + 1555666.

It is an arithmetic number, because the mean of its divisors is an integer number (1555666).

Almost surely, 2^3111331 is an apocalyptic number.

3111331 is a deficient number, since it is larger than the sum of its proper divisors (1).

3111331 is an equidigital number, since it uses as much as digits as its factorization.

3111331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27, while the sum is 13.

The square root of 3111331 is about 1763.8965389160. The cubic root of 3111331 is about 145.9874105614.

Adding to 3111331 its reverse (1331113), we get a palindrome (4442444).

The spelling of 3111331 in words is "three million, one hundred eleven thousand, three hundred thirty-one".