2103311309 has 4 divisors (see below), whose sum is σ = 2294521440. Its totient is φ = 1912101180.

The previous prime is 2103311299. The next prime is 2103311321. The reversal of 2103311309 is 9031133012.

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 not a de Polignac number, because 2103311309 - 2¹⁶ = 2103245773 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 (2103311359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95605049 + ... + 95605070.

It is an arithmetic number, because the mean of its divisors is an integer number (573630360).

Almost surely, 2^2103311309 is an apocalyptic number.

It is an amenable number.

2103311309 is a deficient number, since it is larger than the sum of its proper divisors (191210131).

2103311309 is a wasteful number, since it uses less digits than its factorization.

2103311309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191210130.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 2103311309 is about 45861.8720616592. The cubic root of 2103311309 is about 1281.2518898279.

The spelling of 2103311309 in words is "two billion, one hundred three million, three hundred eleven thousand, three hundred nine".