13120503 has 8 divisors (see below), whose sum is σ = 19084416. Its totient is φ = 7951800.

The previous prime is 13120489. The next prime is 13120517. The reversal of 13120503 is 30502131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13120489) and next prime (13120517).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13120503 - 2⁴ = 13120487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13120553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198763 + ... + 198828.

It is an arithmetic number, because the mean of its divisors is an integer number (2385552).

Almost surely, 2^13120503 is an apocalyptic number.

13120503 is a deficient number, since it is larger than the sum of its proper divisors (5963913).

13120503 is a wasteful number, since it uses less digits than its factorization.

13120503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397605.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 13120503 is about 3622.2234884115. The cubic root of 13120503 is about 235.8577556593.

Adding to 13120503 its reverse (30502131), we get a palindrome (43622634).

The spelling of 13120503 in words is "thirteen million, one hundred twenty thousand, five hundred three".