3117987 has 16 divisors (see below), whose sum is σ = 4891680. Its totient is φ = 1956096.

The previous prime is 3117967. The next prime is 3117991. The reversal of 3117987 is 7897113.

It is not a de Polignac number, because 3117987 - 2⁶ = 3117923 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (3117967) 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 in 15 ways as a sum of consecutive naturals, for example, 2938 + ... + 3855.

It is an arithmetic number, because the mean of its divisors is an integer number (305730).

Almost surely, 2^3117987 is an apocalyptic number.

3117987 is a deficient number, since it is larger than the sum of its proper divisors (1773693).

3117987 is a wasteful number, since it uses less digits than its factorization.

3117987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6819 (or 6813 counting only the distinct ones).

The product of its digits is 10584, while the sum is 36.

The square root of 3117987 is about 1765.7822629079. The cubic root of 3117987 is about 146.0914389361.

The spelling of 3117987 in words is "three million, one hundred seventeen thousand, nine hundred eighty-seven".