2311022320 has 80 divisors (see below), whose sum is σ = 5468712480. Its totient is φ = 908070912.

The previous prime is 2311022293. The next prime is 2311022387. The reversal of 2311022320 is 232201132.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 2311022294 and 2311022303.

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, 1792236 + ... + 1793524.

It is an arithmetic number, because the mean of its divisors is an integer number (68358906).

Almost surely, 2^2311022320 is an apocalyptic number.

2311022320 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 2311022320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2734356240).

2311022320 is an abundant number, since it is smaller than the sum of its proper divisors (3157690160).

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

2311022320 is a wasteful number, since it uses less digits than its factorization.

2311022320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1682 (or 1676 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2311022320 is about 48073.0935139398. The cubic root of 2311022320 is about 1322.1113898526. Note that the first 3 decimals are identical.

Adding to 2311022320 its reverse (232201132), we get a palindrome (2543223452).

The spelling of 2311022320 in words is "two billion, three hundred eleven million, twenty-two thousand, three hundred twenty".