13134321 has 6 divisors (see below), whose sum is σ = 18971810. Its totient is φ = 8756208.

The previous prime is 13134299. The next prime is 13134367. The reversal of 13134321 is 12343131.

13134321 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 10653696 + 2480625 = 3264^2 + 1575^2 .

It is not a de Polignac number, because 13134321 - 2⁷ = 13134193 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13134294 and 13134303.

It is not an unprimeable number, because it can be changed into a prime (13130321) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 729676 + ... + 729693.

Almost surely, 2^13134321 is an apocalyptic number.

It is an amenable number.

13134321 is a deficient number, since it is larger than the sum of its proper divisors (5837489).

13134321 is a wasteful number, since it uses less digits than its factorization.

13134321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1459375 (or 1459372 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 13134321 is about 3624.1303784494. The cubic root of 13134321 is about 235.9405253271.

Adding to 13134321 its reverse (12343131), we get a palindrome (25477452).

The spelling of 13134321 in words is "thirteen million, one hundred thirty-four thousand, three hundred twenty-one".