2311442120 has 128 divisors (see below), whose sum is σ = 5711126400. Its totient is φ = 836849664.

The previous prime is 2311442083. The next prime is 2311442123. The reversal of 2311442120 is 212441132.

It is a super-2 number, since 2×2311442120² = 10685529348220188800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2311442092 and 2311442101.

It is not an unprimeable number, because it can be changed into a prime (2311442123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8167499 + ... + 8167781.

It is an arithmetic number, because the mean of its divisors is an integer number (44618175).

Almost surely, 2^2311442120 is an apocalyptic number.

2311442120 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 2311442120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2855563200).

2311442120 is an abundant number, since it is smaller than the sum of its proper divisors (3399684280).

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

2311442120 is a wasteful number, since it uses less digits than its factorization.

2311442120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559 (or 555 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 2311442120 is about 48077.4595834680. The cubic root of 2311442120 is about 1322.1914393836.

Adding to 2311442120 its reverse (212441132), we get a palindrome (2523883252).

The spelling of 2311442120 in words is "two billion, three hundred eleven million, four hundred forty-two thousand, one hundred twenty".