2111303540 has 12 divisors (see below), whose sum is σ = 4433737476. Its totient is φ = 844521408.

The previous prime is 2111303539. The next prime is 2111303543. The reversal of 2111303540 is 453031112.

It can be written as a sum of positive squares in 2 ways, for example, as 1592648464 + 518655076 = 39908^2 + 22774^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 105565177 = 2111303540 / (2 + 1 + 1 + 1 + 3 + 0 + 3 + 5 + 4 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111303543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52782569 + ... + 52782608.

It is an arithmetic number, because the mean of its divisors is an integer number (369478123).

Almost surely, 2^2111303540 is an apocalyptic number.

2111303540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2111303540 is an abundant number, since it is smaller than the sum of its proper divisors (2322433936).

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

2111303540 is a wasteful number, since it uses less digits than its factorization.

2111303540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105565186 (or 105565184 counting only the distinct ones).

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

The square root of 2111303540 is about 45948.9231647489. The cubic root of 2111303540 is about 1282.8726862307.

Adding to 2111303540 its reverse (453031112), we get a palindrome (2564334652).

The spelling of 2111303540 in words is "two billion, one hundred eleven million, three hundred three thousand, five hundred forty".