2911243 has 2 divisors, whose sum is σ = 2911244. Its totient is φ = 2911242.

The previous prime is 2911211. The next prime is 2911247. The reversal of 2911243 is 3421192.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2911243 - 2⁵ = 2911211 is a prime.

2911243 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2911247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1455621 + 1455622.

It is an arithmetic number, because the mean of its divisors is an integer number (1455622).

2^2911243 is an apocalyptic number.

2911243 is a deficient number, since it is larger than the sum of its proper divisors (1).

2911243 is an equidigital number, since it uses as much as digits as its factorization.

2911243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 22.

The square root of 2911243 is about 1706.2365017781. The cubic root of 2911243 is about 142.7883644635.

The spelling of 2911243 in words is "two million, nine hundred eleven thousand, two hundred forty-three".