30876987 has 4 divisors (see below), whose sum is σ = 41169320. Its totient is φ = 20584656.

The previous prime is 30876983. The next prime is 30876991. The reversal of 30876987 is 78967803.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78967803 = 3 ⋅26322601.

It is an interprime number because it is at equal distance from previous prime (30876983) and next prime (30876991).

It is not a de Polignac number, because 30876987 - 2² = 30876983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30876983) 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, 5146162 + ... + 5146167.

It is an arithmetic number, because the mean of its divisors is an integer number (10292330).

Almost surely, 2^30876987 is an apocalyptic number.

30876987 is a deficient number, since it is larger than the sum of its proper divisors (10292333).

30876987 is a wasteful number, since it uses less digits than its factorization.

30876987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10292332.

The product of its (nonzero) digits is 508032, while the sum is 48.

The square root of 30876987 is about 5556.7064885596. The cubic root of 30876987 is about 313.7219975749.

The spelling of 30876987 in words is "thirty million, eight hundred seventy-six thousand, nine hundred eighty-seven".