13103247 has 4 divisors (see below), whose sum is σ = 17471000. Its totient is φ = 8735496.

The previous prime is 13103239. The next prime is 13103269. The reversal of 13103247 is 74230131.

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

It is not a de Polignac number, because 13103247 - 2³ = 13103239 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 (13103287) 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, 2183872 + ... + 2183877.

It is an arithmetic number, because the mean of its divisors is an integer number (4367750).

Almost surely, 2^13103247 is an apocalyptic number.

13103247 is a deficient number, since it is larger than the sum of its proper divisors (4367753).

13103247 is an equidigital number, since it uses as much as digits as its factorization.

13103247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4367752.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 13103247 is about 3619.8407423532. The cubic root of 13103247 is about 235.7543107685.

Adding to 13103247 its reverse (74230131), we get a palindrome (87333378).

The spelling of 13103247 in words is "thirteen million, one hundred three thousand, two hundred forty-seven".