870171312 has 20 divisors (see below), whose sum is σ = 2247942680. Its totient is φ = 290057088.

The previous prime is 870171311. The next prime is 870171317. The reversal of 870171312 is 213171078.

It is a super-2 number, since 2×870171312² = 1514396224455602688, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 870171312.

It is not an unprimeable number, because it can be changed into a prime (870171311) 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, 9064237 + ... + 9064332.

It is an arithmetic number, because the mean of its divisors is an integer number (112397134).

Almost surely, 2^870171312 is an apocalyptic number.

It is an amenable number.

870171312 is an abundant number, since it is smaller than the sum of its proper divisors (1377771368).

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

870171312 is a wasteful number, since it uses less digits than its factorization.

870171312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18128580 (or 18128574 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 30.

The square root of 870171312 is about 29498.6662749352. Note that the first 3 decimals coincide. The cubic root of 870171312 is about 954.7029263387.

The spelling of 870171312 in words is "eight hundred seventy million, one hundred seventy-one thousand, three hundred twelve".