30887 has 4 divisors (see below), whose sum is σ = 31416. Its totient is φ = 30360.

The previous prime is 30881. The next prime is 30893. The reversal of 30887 is 78803.

30887 is nontrivially palindromic in base 8.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (30881) and next prime (30893).

It is a cyclic number.

It is not a de Polignac number, because 30887 - 2⁴ = 30871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 30887.

It is not an unprimeable number, because it can be changed into a prime (30881) 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, 164 + ... + 297.

It is an arithmetic number, because the mean of its divisors is an integer number (7854).

2³⁰⁸⁸⁷ is an apocalyptic number.

30887 is a deficient number, since it is larger than the sum of its proper divisors (529).

30887 is an equidigital number, since it uses as much as digits as its factorization.

30887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 30887 is about 175.7469772144. The cubic root of 30887 is about 31.3755905880.

It can be divided in two parts, 308 and 87, that multiplied together give a triangular number (26796 = T₂₃₁).

The spelling of 30887 in words is "thirty thousand, eight hundred eighty-seven".