1318003 has 2 divisors, whose sum is σ = 1318004. Its totient is φ = 1318002.

The previous prime is 1317989. The next prime is 1318013. The reversal of 1318003 is 3008131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1318003 - 2⁵ = 1317971 is a prime.

It is not a weakly prime, because it can be changed into another prime (1318013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659001 + 659002.

It is an arithmetic number, because the mean of its divisors is an integer number (659002).

2^1318003 is an apocalyptic number.

1318003 is a deficient number, since it is larger than the sum of its proper divisors (1).

1318003 is an equidigital number, since it uses as much as digits as its factorization.

1318003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1318003 is about 1148.0431176572. The cubic root of 1318003 is about 109.6407841450.

The spelling of 1318003 in words is "one million, three hundred eighteen thousand, three".