134403321 has 32 divisors (see below), whose sum is σ = 209735680. Its totient is φ = 75816000.

The previous prime is 134403317. The next prime is 134403331. The reversal of 134403321 is 123304431.

It is not a de Polignac number, because 134403321 - 2² = 134403317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (134403331) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20046 + ... + 25896.

It is an arithmetic number, because the mean of its divisors is an integer number (6554240).

Almost surely, 2^134403321 is an apocalyptic number.

It is an amenable number.

134403321 is a deficient number, since it is larger than the sum of its proper divisors (75332359).

134403321 is a wasteful number, since it uses less digits than its factorization.

134403321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5917.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 134403321 is about 11593.2446277994. The cubic root of 134403321 is about 512.2358850112.

Adding to 134403321 its reverse (123304431), we get a palindrome (257707752).

It can be divided in two parts, 13440 and 3321, that added together give a palindrome (16761).

The spelling of 134403321 in words is "one hundred thirty-four million, four hundred three thousand, three hundred twenty-one".