1351003 has 4 divisors (see below), whose sum is σ = 1361448. Its totient is φ = 1340560.

The previous prime is 1350977. The next prime is 1351019. The reversal of 1351003 is 3001531.

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 1351003 - 2¹⁷ = 1219931 is a prime.

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1351093) 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, 5026 + ... + 5287.

It is an arithmetic number, because the mean of its divisors is an integer number (340362).

2^1351003 is an apocalyptic number.

1351003 is a deficient number, since it is larger than the sum of its proper divisors (10445).

1351003 is a wasteful number, since it uses less digits than its factorization.

1351003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10444.

The product of its (nonzero) digits is 45, while the sum is 13.

The square root of 1351003 is about 1162.3265461995. The cubic root of 1351003 is about 110.5483091730.

Adding to 1351003 its reverse (3001531), we get a palindrome (4352534).

The spelling of 1351003 in words is "one million, three hundred fifty-one thousand, three".