2113133441 has 4 divisors (see below), whose sum is σ = 2205008832. Its totient is φ = 2021258052.

The previous prime is 2113133357. The next prime is 2113133443. The reversal of 2113133441 is 1443313112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2113133441 - 2²⁶ = 2046024577 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 91875367 = 2113133441 / (2 + 1 + 1 + 3 + 1 + 3 + 3 + 4 + 4 + 1).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2113133443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45937661 + ... + 45937706.

It is an arithmetic number, because the mean of its divisors is an integer number (551252208).

Almost surely, 2^2113133441 is an apocalyptic number.

It is an amenable number.

2113133441 is a deficient number, since it is larger than the sum of its proper divisors (91875391).

2113133441 is an equidigital number, since it uses as much as digits as its factorization.

2113133441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91875390.

The product of its digits is 864, while the sum is 23.

The square root of 2113133441 is about 45968.8311902750. The cubic root of 2113133441 is about 1283.2432080559.

Adding to 2113133441 its reverse (1443313112), we get a palindrome (3556446553).

The spelling of 2113133441 in words is "two billion, one hundred thirteen million, one hundred thirty-three thousand, four hundred forty-one".