2311880 has 32 divisors (see below), whose sum is σ = 5383800. Its totient is φ = 892416.

The previous prime is 2311879. The next prime is 2311889. The reversal of 2311880 is 881132.

It can be written as a sum of positive squares in 4 ways, for example, as 2067844 + 244036 = 1438^2 + 494^2 .

It is a super-3 number, since 3×2311880³ = 37069533312110016000, which contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2311889) 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, 164 + ... + 2156.

2^2311880 is an apocalyptic number.

2311880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2311880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2691900).

2311880 is an abundant number, since it is smaller than the sum of its proper divisors (3071920).

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

2311880 is a wasteful number, since it uses less digits than its factorization.

2311880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2033 (or 2029 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 2311880 is about 1520.4867641647. The cubic root of 2311880 is about 132.2274926171.

The spelling of 2311880 in words is "two million, three hundred eleven thousand, eight hundred eighty".