870131218 has 8 divisors (see below), whose sum is σ = 1423851120. Its totient is φ = 395514180.

The previous prime is 870131191. The next prime is 870131231. The reversal of 870131218 is 812131078.

It is a happy number.

870131218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 870131218.

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, 19775688 + ... + 19775731.

It is an arithmetic number, because the mean of its divisors is an integer number (177981390).

Almost surely, 2^870131218 is an apocalyptic number.

870131218 is a deficient number, since it is larger than the sum of its proper divisors (553719902).

870131218 is a wasteful number, since it uses less digits than its factorization.

870131218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39551432.

The product of its (nonzero) digits is 2688, while the sum is 31.

The square root of 870131218 is about 29497.9866770598. The cubic root of 870131218 is about 954.6882631543.

The spelling of 870131218 in words is "eight hundred seventy million, one hundred thirty-one thousand, two hundred eighteen".