2103716813 has 4 divisors (see below), whose sum is σ = 2294963808. Its totient is φ = 1912469820.

The previous prime is 2103716809. The next prime is 2103716837. The reversal of 2103716813 is 3186173012.

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 2103716813 - 2² = 2103716809 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2103716813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2103716843) 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, 95623481 + ... + 95623502.

It is an arithmetic number, because the mean of its divisors is an integer number (573740952).

Almost surely, 2^2103716813 is an apocalyptic number.

It is an amenable number.

2103716813 is a deficient number, since it is larger than the sum of its proper divisors (191246995).

2103716813 is a wasteful number, since it uses less digits than its factorization.

2103716813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191246994.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 2103716813 is about 45866.2927758501. The cubic root of 2103716813 is about 1281.3342233970.

Adding to 2103716813 its reverse (3186173012), we get a palindrome (5289889825).

The spelling of 2103716813 in words is "two billion, one hundred three million, seven hundred sixteen thousand, eight hundred thirteen".