2111532320 has 144 divisors (see below), whose sum is σ = 5322905280. Its totient is φ = 791382528.

The previous prime is 2111532307. The next prime is 2111532331. The reversal of 2111532320 is 232351112.

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 = 2111532292 and 2111532301.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8028509 + ... + 8028771.

It is an arithmetic number, because the mean of its divisors is an integer number (36964620).

Almost surely, 2^2111532320 is an apocalyptic number.

2111532320 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 2111532320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2661452640).

2111532320 is an abundant number, since it is smaller than the sum of its proper divisors (3211372960).

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

2111532320 is a wasteful number, since it uses less digits than its factorization.

2111532320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455 (or 428 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 2111532320 is about 45951.4126007025. The cubic root of 2111532320 is about 1282.9190217460.

Adding to 2111532320 its reverse (232351112), we get a palindrome (2343883432).

It can be divided in two parts, 21115 and 32320, that added together give a palindrome (53435).

The spelling of 2111532320 in words is "two billion, one hundred eleven million, five hundred thirty-two thousand, three hundred twenty".