870855284231 has 4 divisors (see below), whose sum is σ = 870857919864. Its totient is φ = 870852648600.

The previous prime is 870855284227. The next prime is 870855284237. The reversal of 870855284231 is 132482558078.

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 870855284231 - 2² = 870855284227 is a prime.

It is a super-2 number, since 2×870855284231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870855284237) 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, 736805 + ... + 1511486.

It is an arithmetic number, because the mean of its divisors is an integer number (217714479966).

Almost surely, 2^870855284231 is an apocalyptic number.

870855284231 is a deficient number, since it is larger than the sum of its proper divisors (2635633).

870855284231 is a wasteful number, since it uses less digits than its factorization.

870855284231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2635632.

The product of its (nonzero) digits is 4300800, while the sum is 53.

The spelling of 870855284231 in words is "eight hundred seventy billion, eight hundred fifty-five million, two hundred eighty-four thousand, two hundred thirty-one".