2311125820 has 24 divisors (see below), whose sum is σ = 4984537824. Its totient is φ = 899464896.

The previous prime is 2311125811. The next prime is 2311125823. The reversal of 2311125820 is 285211132.

2311125820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311125823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1560832 + ... + 1562311.

It is an arithmetic number, because the mean of its divisors is an integer number (207689076).

Almost surely, 2^2311125820 is an apocalyptic number.

2311125820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2311125820 is an abundant number, since it is smaller than the sum of its proper divisors (2673412004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2311125820 is a wasteful number, since it uses less digits than its factorization.

2311125820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3123189 (or 3123187 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 2311125820 is about 48074.1699876347. The cubic root of 2311125820 is about 1322.1311266426.

Adding to 2311125820 its reverse (285211132), we get a palindrome (2596336952).

The spelling of 2311125820 in words is "two billion, three hundred eleven million, one hundred twenty-five thousand, eight hundred twenty".