2111503240 has 96 divisors (see below), whose sum is σ = 5968146240. Its totient is φ = 658120320.

The previous prime is 2111503223. The next prime is 2111503243. The reversal of 2111503240 is 423051112.

It is not an unprimeable number, because it can be changed into a prime (2111503243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2719 + ... + 65041.

It is an arithmetic number, because the mean of its divisors is an integer number (62168190).

Almost surely, 2^2111503240 is an apocalyptic number.

2111503240 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 2111503240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2984073120).

2111503240 is an abundant number, since it is smaller than the sum of its proper divisors (3856643000).

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

2111503240 is a wasteful number, since it uses less digits than its factorization.

2111503240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62363 (or 62348 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 2111503240 is about 45951.0961784374. The cubic root of 2111503240 is about 1282.9131322701.

Adding to 2111503240 its reverse (423051112), we get a palindrome (2534554352).

The spelling of 2111503240 in words is "two billion, one hundred eleven million, five hundred three thousand, two hundred forty".