2113204340 has 48 divisors (see below), whose sum is σ = 4869296208. Its totient is φ = 765533184.

The previous prime is 2113204297. The next prime is 2113204343. The reversal of 2113204340 is 434023112.

It can be written as a sum of positive squares in 8 ways, for example, as 23251684 + 2089952656 = 4822^2 + 45716^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113204343) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 62897 + ... + 90456.

It is an arithmetic number, because the mean of its divisors is an integer number (101443671).

Almost surely, 2^2113204340 is an apocalyptic number.

2113204340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2113204340 is an abundant number, since it is smaller than the sum of its proper divisors (2756091868).

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

2113204340 is a wasteful number, since it uses less digits than its factorization.

2113204340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153428 (or 153426 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 2113204340 is about 45969.6023476384. The cubic root of 2113204340 is about 1283.2575595147.

Adding to 2113204340 its reverse (434023112), we get a palindrome (2547227452).

The spelling of 2113204340 in words is "two billion, one hundred thirteen million, two hundred four thousand, three hundred forty".