13103121 has 16 divisors (see below), whose sum is σ = 17860608. Its totient is φ = 8542800.

The previous prime is 13103087. The next prime is 13103147. The reversal of 13103121 is 12130131.

It is not a de Polignac number, because 13103121 - 2⁷ = 13102993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13103097 and 13103106.

It is not an unprimeable number, because it can be changed into a prime (13103161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48216 + ... + 48486.

It is an arithmetic number, because the mean of its divisors is an integer number (1116288).

Almost surely, 2^13103121 is an apocalyptic number.

It is an amenable number.

13103121 is a deficient number, since it is larger than the sum of its proper divisors (4757487).

13103121 is a wasteful number, since it uses less digits than its factorization.

13103121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 13103121 is about 3619.8233382307. The cubic root of 13103121 is about 235.7535550999.

Adding to 13103121 its reverse (12130131), we get a palindrome (25233252).

The spelling of 13103121 in words is "thirteen million, one hundred three thousand, one hundred twenty-one".