2103513065 has 16 divisors (see below), whose sum is σ = 2567516160. Its totient is φ = 1654188480.

The previous prime is 2103513053. The next prime is 2103513067. The reversal of 2103513065 is 5603153012.

It is not a de Polignac number, because 2103513065 - 2⁸ = 2103512809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2103513067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54020 + ... + 84410.

It is an arithmetic number, because the mean of its divisors is an integer number (160469760).

Almost surely, 2^2103513065 is an apocalyptic number.

It is an amenable number.

2103513065 is a deficient number, since it is larger than the sum of its proper divisors (464003095).

2103513065 is a wasteful number, since it uses less digits than its factorization.

2103513065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30632.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 2103513065 is about 45864.0716138461. The cubic root of 2103513065 is about 1281.2928557071.

Adding to 2103513065 its reverse (5603153012), we get a palindrome (7706666077).

The spelling of 2103513065 in words is "two billion, one hundred three million, five hundred thirteen thousand, sixty-five".