2013520811 has 2 divisors, whose sum is σ = 2013520812. Its totient is φ = 2013520810.

The previous prime is 2013520799. The next prime is 2013520813. The reversal of 2013520811 is 1180253102.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2013520811 - 2¹⁰ = 2013519787 is a prime.

Together with 2013520813, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2013520813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006760405 + 1006760406.

It is an arithmetic number, because the mean of its divisors is an integer number (1006760406).

Almost surely, 2^2013520811 is an apocalyptic number.

2013520811 is a deficient number, since it is larger than the sum of its proper divisors (1).

2013520811 is an equidigital number, since it uses as much as digits as its factorization.

2013520811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 2013520811 is about 44872.2721845016. The cubic root of 2013520811 is about 1262.7538681845.

Adding to 2013520811 its reverse (1180253102), we get a palindrome (3193773913).

The spelling of 2013520811 in words is "two billion, thirteen million, five hundred twenty thousand, eight hundred eleven".