2104343309 has 4 divisors (see below), whose sum is σ = 2215098240. Its totient is φ = 1993588380.

The previous prime is 2104343299. The next prime is 2104343357. The reversal of 2104343309 is 9033434012.

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 2104343309 - 2¹² = 2104339213 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 (2104343509) 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, 55377437 + ... + 55377474.

It is an arithmetic number, because the mean of its divisors is an integer number (553774560).

Almost surely, 2^2104343309 is an apocalyptic number.

It is an amenable number.

2104343309 is a deficient number, since it is larger than the sum of its proper divisors (110754931).

2104343309 is a wasteful number, since it uses less digits than its factorization.

2104343309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110754930.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 2104343309 is about 45873.1218580118. The cubic root of 2104343309 is about 1281.4614064041.

The spelling of 2104343309 in words is "two billion, one hundred four million, three hundred forty-three thousand, three hundred nine".