2102343109 has 4 divisors (see below), whose sum is σ = 2107747980. Its totient is φ = 2096938240.

The previous prime is 2102343091. The next prime is 2102343149. The reversal of 2102343109 is 9013432012.

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 216178209 + 1886164900 = 14703^2 + 43430^2 .

It is a cyclic number.

It is not a de Polignac number, because 2102343109 - 2²⁷ = 1968125381 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 (2102343149) 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 3 ways as a sum of consecutive naturals, for example, 2701852 + ... + 2702629.

It is an arithmetic number, because the mean of its divisors is an integer number (526936995).

Almost surely, 2^2102343109 is an apocalyptic number.

It is an amenable number.

2102343109 is a deficient number, since it is larger than the sum of its proper divisors (5404871).

2102343109 is an equidigital number, since it uses as much as digits as its factorization.

2102343109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5404870.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 2102343109 is about 45851.3152374062. The cubic root of 2102343109 is about 1281.0552636053.

The spelling of 2102343109 in words is "two billion, one hundred two million, three hundred forty-three thousand, one hundred nine".