135321443 has 8 divisors (see below), whose sum is σ = 144650016. Its totient is φ = 126280000.

The previous prime is 135321437. The next prime is 135321449. The reversal of 135321443 is 344123531.

It is an interprime number because it is at equal distance from previous prime (135321437) and next prime (135321449).

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

It is not a de Polignac number, because 135321443 - 2⁴ = 135321427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135321449) 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, 70808 + ... + 72693.

It is an arithmetic number, because the mean of its divisors is an integer number (18081252).

Almost surely, 2^135321443 is an apocalyptic number.

135321443 is a deficient number, since it is larger than the sum of its proper divisors (9328573).

135321443 is a wasteful number, since it uses less digits than its factorization.

135321443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143565.

The product of its digits is 4320, while the sum is 26.

The square root of 135321443 is about 11632.7745185747. The cubic root of 135321443 is about 513.3996166822.

Adding to 135321443 its reverse (344123531), we get a palindrome (479444974).

The spelling of 135321443 in words is "one hundred thirty-five million, three hundred twenty-one thousand, four hundred forty-three".