3118987 has 2 divisors, whose sum is σ = 3118988. Its totient is φ = 3118986.

The previous prime is 3118949. The next prime is 3119009. The reversal of 3118987 is 7898113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3118987 - 2⁷ = 3118859 is a prime.

It is not a weakly prime, because it can be changed into another prime (3118937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1559493 + 1559494.

It is an arithmetic number, because the mean of its divisors is an integer number (1559494).

Almost surely, 2^3118987 is an apocalyptic number.

3118987 is a deficient number, since it is larger than the sum of its proper divisors (1).

3118987 is an equidigital number, since it uses as much as digits as its factorization.

3118987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 37.

The square root of 3118987 is about 1766.0654008275. The cubic root of 3118987 is about 146.1070554031.

The spelling of 3118987 in words is "three million, one hundred eighteen thousand, nine hundred eighty-seven".