870312 has 16 divisors (see below), whose sum is σ = 2175840. Its totient is φ = 290096.

The previous prime is 870301. The next prime is 870323. The reversal of 870312 is 213078.

870312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (870301) and next prime (870323).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18108 + ... + 18155.

It is an arithmetic number, because the mean of its divisors is an integer number (135990).

2⁸⁷⁰³¹² is an apocalyptic number.

It is an amenable number.

870312 is an abundant number, since it is smaller than the sum of its proper divisors (1305528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

870312 is a wasteful number, since it uses less digits than its factorization.

870312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36272 (or 36268 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 870312 is about 932.9051398722. The cubic root of 870312 is about 95.4754375214.

The spelling of 870312 in words is "eight hundred seventy thousand, three hundred twelve".