134311321 has 4 divisors (see below), whose sum is σ = 134335012. Its totient is φ = 134287632.

The previous prime is 134311301. The next prime is 134311343. The reversal of 134311321 is 123113431.

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

It can be written as a sum of positive squares in 2 ways, for example, as 585225 + 133726096 = 765^2 + 11564^2 .

It is a cyclic number.

It is not a de Polignac number, because 134311321 - 2⁷ = 134311193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134311301) 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 3 ways as a sum of consecutive naturals, for example, 2251 + ... + 16543.

It is an arithmetic number, because the mean of its divisors is an integer number (33583753).

Almost surely, 2^134311321 is an apocalyptic number.

It is an amenable number.

134311321 is a deficient number, since it is larger than the sum of its proper divisors (23691).

134311321 is an equidigital number, since it uses as much as digits as its factorization.

134311321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23690.

The product of its digits is 216, while the sum is 19.

The square root of 134311321 is about 11589.2761206212. The cubic root of 134311321 is about 512.1189820017.

Adding to 134311321 its reverse (123113431), we get a palindrome (257424752).

The spelling of 134311321 in words is "one hundred thirty-four million, three hundred eleven thousand, three hundred twenty-one".