2104043213 has 4 divisors (see below), whose sum is σ = 2106780060. Its totient is φ = 2101306368.

The previous prime is 2104043189. The next prime is 2104043239. The reversal of 2104043213 is 3123404012.

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 1691018884 + 413024329 = 41122^2 + 20323^2 .

It is a cyclic number.

It is not a de Polignac number, because 2104043213 - 2²⁰ = 2102994637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2104043273) 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, 1367270 + ... + 1368807.

It is an arithmetic number, because the mean of its divisors is an integer number (526695015).

Almost surely, 2^2104043213 is an apocalyptic number.

It is an amenable number.

2104043213 is a deficient number, since it is larger than the sum of its proper divisors (2736847).

2104043213 is an equidigital number, since it uses as much as digits as its factorization.

2104043213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2736846.

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

The square root of 2104043213 is about 45869.8508063848. The cubic root of 2104043213 is about 1281.4004879975.

Adding to 2104043213 its reverse (3123404012), we get a palindrome (5227447225).

The spelling of 2104043213 in words is "two billion, one hundred four million, forty-three thousand, two hundred thirteen".