2109013 has 2 divisors, whose sum is σ = 2109014. Its totient is φ = 2109012.

The previous prime is 2109011. The next prime is 2109049. The reversal of 2109013 is 3109012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2007889 + 101124 = 1417^2 + 318^2 .

It is a cyclic number.

It is not a de Polignac number, because 2109013 - 2¹ = 2109011 is a prime.

Together with 2109011, it forms a pair of twin primes.

2109013 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2109011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1054506 + 1054507.

It is an arithmetic number, because the mean of its divisors is an integer number (1054507).

2^2109013 is an apocalyptic number.

It is an amenable number.

2109013 is a deficient number, since it is larger than the sum of its proper divisors (1).

2109013 is an equidigital number, since it uses as much as digits as its factorization.

2109013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 2109013 is about 1452.2441254830. The cubic root of 2109013 is about 128.2408591509.

Subtracting 2109013 from its reverse (3109012), we obtain a palindrome (999999).

It can be divided in two parts, 21090 and 13, that multiplied together give a triangular number (274170 = T₇₄₀).

The spelling of 2109013 in words is "two million, one hundred nine thousand, thirteen".