3118691 has 2 divisors, whose sum is σ = 3118692. Its totient is φ = 3118690.

The previous prime is 3118673. The next prime is 3118697. The reversal of 3118691 is 1968113.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3118691 - 2¹⁸ = 2856547 is a prime.

It is a Sophie Germain prime.

It is equal to p₂₂₄₇₅₉ and since 3118691 and 224759 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (3118697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1559345 + 1559346.

It is an arithmetic number, because the mean of its divisors is an integer number (1559346).

Almost surely, 2^3118691 is an apocalyptic number.

3118691 is a deficient number, since it is larger than the sum of its proper divisors (1).

3118691 is an equidigital number, since it uses as much as digits as its factorization.

3118691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 29.

The square root of 3118691 is about 1765.9815967331. The cubic root of 3118691 is about 146.1024332767.

The spelling of 3118691 in words is "three million, one hundred eighteen thousand, six hundred ninety-one".