870319202281 has 9 divisors (see below), whose sum is σ = 924542782149. Its totient is φ = 819109028544.

The previous prime is 870319202251. The next prime is 870319202293. The reversal of 870319202281 is 182202913078.

The square root of 870319202281 is 932909.

It is a perfect power (a square), and thus also a powerful number.

870319202281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 605814712281 + 264504490000 = 778341^2 + 514300^2 .

It is not a de Polignac number, because 870319202281 - 2¹⁹ = 870318677993 is a prime.

It is a super-2 number, since 2×870319202281² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (870319202251) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 15832015 + ... + 15886891.

Almost surely, 2^870319202281 is an apocalyptic number.

870319202281 is the 932909-th square number.

870319202281 is the 466455-th centered octagonal number.

It is an amenable number.

870319202281 is a deficient number, since it is larger than the sum of its proper divisors (54223579868).

870319202281 is an frugal number, since it uses more digits than its factorization.

870319202281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109788 (or 54894 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 43.

The spelling of 870319202281 in words is "eight hundred seventy billion, three hundred nineteen million, two hundred two thousand, two hundred eighty-one".