2113055405 has 4 divisors (see below), whose sum is σ = 2535666492. Its totient is φ = 1690444320.

The previous prime is 2113055393. The next prime is 2113055411. The reversal of 2113055405 is 5045503112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1028933929 + 1084121476 = 32077^2 + 32926^2 .

It is not a de Polignac number, because 2113055405 - 2¹⁶ = 2112989869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211305536 + ... + 211305545.

It is an arithmetic number, because the mean of its divisors is an integer number (633916623).

Almost surely, 2^2113055405 is an apocalyptic number.

It is an amenable number.

2113055405 is a deficient number, since it is larger than the sum of its proper divisors (422611087).

2113055405 is an equidigital number, since it uses as much as digits as its factorization.

2113055405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422611086.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 2113055405 is about 45967.9823899201. The cubic root of 2113055405 is about 1283.2274115461.

Adding to 2113055405 its reverse (5045503112), we get a palindrome (7158558517).

The spelling of 2113055405 in words is "two billion, one hundred thirteen million, fifty-five thousand, four hundred five".