2311157120 has 128 divisors (see below), whose sum is σ = 5704158240. Its totient is φ = 894910464.

The previous prime is 2311157119. The next prime is 2311157141. The reversal of 2311157120 is 217511132.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3769934 + ... + 3770546.

Almost surely, 2^2311157120 is an apocalyptic number.

2311157120 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 2311157120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2852079120).

2311157120 is an abundant number, since it is smaller than the sum of its proper divisors (3393001120).

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

2311157120 is a wasteful number, since it uses less digits than its factorization.

2311157120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812 (or 800 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 2311157120 is about 48074.4955251743. The cubic root of 2311157120 is about 1322.1370952369.

Adding to 2311157120 its reverse (217511132), we get a palindrome (2528668252).

The spelling of 2311157120 in words is "two billion, three hundred eleven million, one hundred fifty-seven thousand, one hundred twenty".