856081203 has 4 divisors (see below), whose sum is σ = 1141441608. Its totient is φ = 570720800.

The previous prime is 856081181. The next prime is 856081211. The reversal of 856081203 is 302180658.

It is a happy number.

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 856081203 - 2⁹ = 856080691 is a prime.

It is a super-2 number, since 2×856081203² = 1465750052259854418, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (856081253) 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, 142680198 + ... + 142680203.

It is an arithmetic number, because the mean of its divisors is an integer number (285360402).

Almost surely, 2^856081203 is an apocalyptic number.

856081203 is a deficient number, since it is larger than the sum of its proper divisors (285360405).

856081203 is a wasteful number, since it uses less digits than its factorization.

856081203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285360404.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 856081203 is about 29258.8653744468. The cubic root of 856081203 is about 949.5219027386.

The spelling of 856081203 in words is "eight hundred fifty-six million, eighty-one thousand, two hundred three".