87910331 has 4 divisors (see below), whose sum is σ = 89023200. Its totient is φ = 86797464.

The previous prime is 87910313. The next prime is 87910337. The reversal of 87910331 is 13301978.

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

It is a cyclic number.

It is not a de Polignac number, because 87910331 - 2¹⁰ = 87909307 is a prime.

It is a super-2 number, since 2×87910331² = 15456452593059122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87910337) 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, 556316 + ... + 556473.

It is an arithmetic number, because the mean of its divisors is an integer number (22255800).

Almost surely, 2^87910331 is an apocalyptic number.

87910331 is a deficient number, since it is larger than the sum of its proper divisors (1112869).

87910331 is a wasteful number, since it uses less digits than its factorization.

87910331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112868.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 87910331 is about 9376.0509277627. The cubic root of 87910331 is about 444.6448894443.

The spelling of 87910331 in words is "eighty-seven million, nine hundred ten thousand, three hundred thirty-one".