3138911 has 2 divisors, whose sum is σ = 3138912. Its totient is φ = 3138910.

The previous prime is 3138899. The next prime is 3138913. The reversal of 3138911 is 1198313.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3138911 - 2⁶ = 3138847 is a prime.

It is a Sophie Germain prime.

Together with 3138913, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3138913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1569455 + 1569456.

It is an arithmetic number, because the mean of its divisors is an integer number (1569456).

Almost surely, 2^3138911 is an apocalyptic number.

3138911 is a deficient number, since it is larger than the sum of its proper divisors (1).

3138911 is an equidigital number, since it uses as much as digits as its factorization.

3138911 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 3138911 is about 1771.6972088932. The cubic root of 3138911 is about 146.4175045261.

The spelling of 3138911 in words is "three million, one hundred thirty-eight thousand, nine hundred eleven".