2011289723 has 2 divisors, whose sum is σ = 2011289724. Its totient is φ = 2011289722.

The previous prime is 2011289713. The next prime is 2011289779. The reversal of 2011289723 is 3279821102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2011289723 - 2¹⁴ = 2011273339 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2011289713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005644861 + 1005644862.

It is an arithmetic number, because the mean of its divisors is an integer number (1005644862).

Almost surely, 2^2011289723 is an apocalyptic number.

2011289723 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011289723 is an equidigital number, since it uses as much as digits as its factorization.

2011289723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 2011289723 is about 44847.4048636039. The cubic root of 2011289723 is about 1262.2872963623.

The spelling of 2011289723 in words is "two billion, eleven million, two hundred eighty-nine thousand, seven hundred twenty-three".