135043321 has 8 divisors (see below), whose sum is σ = 154542080. Its totient is φ = 115596288.

The previous prime is 135043313. The next prime is 135043331. The reversal of 135043321 is 123340531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135043321 - 2³ = 135043313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 135043292 and 135043301.

It is not an unprimeable number, because it can be changed into a prime (135043331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7161 + ... + 17926.

It is an arithmetic number, because the mean of its divisors is an integer number (19317760).

Almost surely, 2^135043321 is an apocalyptic number.

It is an amenable number.

135043321 is a deficient number, since it is larger than the sum of its proper divisors (19498759).

135043321 is an equidigital number, since it uses as much as digits as its factorization.

135043321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25863.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 135043321 is about 11620.8141281065. The cubic root of 135043321 is about 513.0476506294.

Adding to 135043321 its reverse (123340531), we get a palindrome (258383852).

The spelling of 135043321 in words is "one hundred thirty-five million, forty-three thousand, three hundred twenty-one".