2111340240 has 120 divisors (see below), whose sum is σ = 7103735808. Its totient is φ = 561980160.

The previous prime is 2111340233. The next prime is 2111340289. The reversal of 2111340240 is 420431112.

2111340240 is a `hidden beast` number, since 211 + 13 + 402 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 434625 + ... + 439455.

Almost surely, 2^2111340240 is an apocalyptic number.

2111340240 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 2111340240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3551867904).

2111340240 is an abundant number, since it is smaller than the sum of its proper divisors (4992395568).

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

2111340240 is a wasteful number, since it uses less digits than its factorization.

2111340240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5457 (or 5448 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2111340240 is about 45949.3225194888. The cubic root of 2111340240 is about 1282.8801194197.

Adding to 2111340240 its reverse (420431112), we get a palindrome (2531771352).

The spelling of 2111340240 in words is "two billion, one hundred eleven million, three hundred forty thousand, two hundred forty".