13621103 has 4 divisors (see below), whose sum is σ = 13629240. Its totient is φ = 13612968.

The previous prime is 13621099. The next prime is 13621109. The reversal of 13621103 is 30112631.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13621103 - 2² = 13621099 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 (13621109) 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, 533 + ... + 5246.

It is an arithmetic number, because the mean of its divisors is an integer number (3407310).

Almost surely, 2^13621103 is an apocalyptic number.

13621103 is a deficient number, since it is larger than the sum of its proper divisors (8137).

13621103 is an equidigital number, since it uses as much as digits as its factorization.

13621103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8136.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 13621103 is about 3690.6778510187. The cubic root of 13621103 is about 238.8200357385.

Adding to 13621103 its reverse (30112631), we get a palindrome (43733734).

The spelling of 13621103 in words is "thirteen million, six hundred twenty-one thousand, one hundred three".