13103143 has 4 divisors (see below), whose sum is σ = 13457320. Its totient is φ = 12748968.

The previous prime is 13103087. The next prime is 13103147. The reversal of 13103143 is 34130131.

13103143 = 577² + 578² + ... + 613².

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-13103143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13103147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177033 + ... + 177106.

It is an arithmetic number, because the mean of its divisors is an integer number (3364330).

Almost surely, 2^13103143 is an apocalyptic number.

13103143 is a deficient number, since it is larger than the sum of its proper divisors (354177).

13103143 is an equidigital number, since it uses as much as digits as its factorization.

13103143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354176.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 13103143 is about 3619.8263770518. The cubic root of 13103143 is about 235.7536870423.

Adding to 13103143 its reverse (34130131), we get a palindrome (47233274).

The spelling of 13103143 in words is "thirteen million, one hundred three thousand, one hundred forty-three".