2291803 has 2 divisors, whose sum is σ = 2291804. Its totient is φ = 2291802.

The previous prime is 2291801. The next prime is 2291827. The reversal of 2291803 is 3081922.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2291803 - 2¹ = 2291801 is a prime.

Together with 2291801, it forms a pair of twin primes.

2291803 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2291801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1145901 + 1145902.

It is an arithmetic number, because the mean of its divisors is an integer number (1145902).

2^2291803 is an apocalyptic number.

2291803 is a deficient number, since it is larger than the sum of its proper divisors (1).

2291803 is an equidigital number, since it uses as much as digits as its factorization.

2291803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 2291803 is about 1513.8702057970. The cubic root of 2291803 is about 131.8436126195.

The spelling of 2291803 in words is "two million, two hundred ninety-one thousand, eight hundred three".