2855811231 has 48 divisors (see below), whose sum is σ = 5089354816. Its totient is φ = 1502696448.

The previous prime is 2855811229. The next prime is 2855811251. The reversal of 2855811231 is 1321185582.

2855811231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2855811231 - 2¹ = 2855811229 is a prime.

It is a super-2 number, since 2×2855811231² = 16311315574211470722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2855811251) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 350601 + ... + 358653.

Almost surely, 2^2855811231 is an apocalyptic number.

2855811231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2855811231 is a deficient number, since it is larger than the sum of its proper divisors (2233543585).

2855811231 is a wasteful number, since it uses less digits than its factorization.

2855811231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8512 (or 8509 counting only the distinct ones).

The product of its digits is 19200, while the sum is 36.

The square root of 2855811231 is about 53439.7907087968. The cubic root of 2855811231 is about 1418.7629295826.

The spelling of 2855811231 in words is "two billion, eight hundred fifty-five million, eight hundred eleven thousand, two hundred thirty-one".