3118931 has 2 divisors, whose sum is σ = 3118932. Its totient is φ = 3118930.

The previous prime is 3118909. The next prime is 3118933. The reversal of 3118931 is 1398113.

It is a strong prime.

It is an emirp because it is prime and its reverse (1398113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3118931 - 2⁶ = 3118867 is a prime.

It is a super-2 number, since 2×3118931² = 19455461165522, which contains 22 as substring.

Together with 3118933, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3118931.

It is not a weakly prime, because it can be changed into another prime (3118933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1559465 + 1559466.

It is an arithmetic number, because the mean of its divisors is an integer number (1559466).

Almost surely, 2^3118931 is an apocalyptic number.

3118931 is a deficient number, since it is larger than the sum of its proper divisors (1).

3118931 is an equidigital number, since it uses as much as digits as its factorization.

3118931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 26.

The square root of 3118931 is about 1766.0495463038. The cubic root of 3118931 is about 146.1061809692.

The spelling of 3118931 in words is "three million, one hundred eighteen thousand, nine hundred thirty-one".