1143803 has 2 divisors, whose sum is σ = 1143804. Its totient is φ = 1143802.

The previous prime is 1143799. The next prime is 1143809. The reversal of 1143803 is 3083411.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1143803 - 2² = 1143799 is a prime.

It is not a weakly prime, because it can be changed into another prime (1143809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571901 + 571902.

It is an arithmetic number, because the mean of its divisors is an integer number (571902).

2^1143803 is an apocalyptic number.

1143803 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143803 is an equidigital number, since it uses as much as digits as its factorization.

1143803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1143803 is about 1069.4872603262. The cubic root of 1143803 is about 104.5804269319.

The spelling of 1143803 in words is "one million, one hundred forty-three thousand, eight hundred three".