1320103 has 4 divisors (see below), whose sum is σ = 1338768. Its totient is φ = 1301440.

The previous prime is 1320091. The next prime is 1320107. The reversal of 1320103 is 3010231.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1320103 is a prime.

It is a super-4 number, since 4×1320103⁴ (a number of 26 digits) contains 4444 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1320103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320107) 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, 9226 + ... + 9367.

It is an arithmetic number, because the mean of its divisors is an integer number (334692).

2^1320103 is an apocalyptic number.

1320103 is a deficient number, since it is larger than the sum of its proper divisors (18665).

1320103 is an equidigital number, since it uses as much as digits as its factorization.

1320103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18664.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 1320103 is about 1148.9573534296. The cubic root of 1320103 is about 109.6989841819.

Adding to 1320103 its reverse (3010231), we get a palindrome (4330334).

The spelling of 1320103 in words is "one million, three hundred twenty thousand, one hundred three".