1373003 has 4 divisors (see below), whose sum is σ = 1388520. Its totient is φ = 1357488.

The previous prime is 1372999. The next prime is 1373027. The reversal of 1373003 is 3003731.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1373003 - 2² = 1372999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1373803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7625 + ... + 7802.

It is an arithmetic number, because the mean of its divisors is an integer number (347130).

2^1373003 is an apocalyptic number.

1373003 is a deficient number, since it is larger than the sum of its proper divisors (15517).

1373003 is an equidigital number, since it uses as much as digits as its factorization.

1373003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15516.

The product of its (nonzero) digits is 189, while the sum is 17.

The square root of 1373003 is about 1171.7521068895. The cubic root of 1373003 is about 111.1451446485.

Adding to 1373003 its reverse (3003731), we get a palindrome (4376734).

The spelling of 1373003 in words is "one million, three hundred seventy-three thousand, three".