3116987 has 4 divisors (see below), whose sum is σ = 3120936. Its totient is φ = 3113040.

The previous prime is 3116977. The next prime is 3116999. The reversal of 3116987 is 7896113.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7896113 = 1567 ⋅5039.

It is a cyclic number.

It is not a de Polignac number, because 3116987 - 2¹⁸ = 2854843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3116947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 338 + ... + 2519.

It is an arithmetic number, because the mean of its divisors is an integer number (780234).

Almost surely, 2^3116987 is an apocalyptic number.

3116987 is a deficient number, since it is larger than the sum of its proper divisors (3949).

3116987 is a wasteful number, since it uses less digits than its factorization.

3116987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3948.

The product of its digits is 9072, while the sum is 35.

The square root of 3116987 is about 1765.4990795806. The cubic root of 3116987 is about 146.0758191297.

The spelling of 3116987 in words is "three million, one hundred sixteen thousand, nine hundred eighty-seven".