2103312443 has 4 divisors (see below), whose sum is σ = 2104544880. Its totient is φ = 2102080008.

The previous prime is 2103312439. The next prime is 2103312457. The reversal of 2103312443 is 3442133012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2103312443 - 2² = 2103312439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2103312943) 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, 613655 + ... + 617072.

It is an arithmetic number, because the mean of its divisors is an integer number (526136220).

Almost surely, 2^2103312443 is an apocalyptic number.

2103312443 is a deficient number, since it is larger than the sum of its proper divisors (1232437).

2103312443 is a wasteful number, since it uses less digits than its factorization.

2103312443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232436.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 2103312443 is about 45861.8844248685. The cubic root of 2103312443 is about 1281.2521200901.

Adding to 2103312443 its reverse (3442133012), we get a palindrome (5545445455).

The spelling of 2103312443 in words is "two billion, one hundred three million, three hundred twelve thousand, four hundred forty-three".