2287811 has 2 divisors, whose sum is σ = 2287812. Its totient is φ = 2287810.

The previous prime is 2287807. The next prime is 2287823. The reversal of 2287811 is 1187822.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2287811 - 2² = 2287807 is a prime.

It is not a weakly prime, because it can be changed into another prime (2287861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1143905 + 1143906.

It is an arithmetic number, because the mean of its divisors is an integer number (1143906).

2^2287811 is an apocalyptic number.

2287811 is a deficient number, since it is larger than the sum of its proper divisors (1).

2287811 is an equidigital number, since it uses as much as digits as its factorization.

2287811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1792, while the sum is 29.

The square root of 2287811 is about 1512.5511561597. The cubic root of 2287811 is about 131.7670170905.

The spelling of 2287811 in words is "two million, two hundred eighty-seven thousand, eight hundred eleven".