135323201 has 6 divisors (see below), whose sum is σ = 146533590. Its totient is φ = 124913568.

The previous prime is 135323197. The next prime is 135323203. The reversal of 135323201 is 102323531.

It can be written as a sum of positive squares in 3 ways, for example, as 4243600 + 131079601 = 2060^2 + 11449^2 .

It is not a de Polignac number, because 135323201 - 2² = 135323197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135323203) 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, 400196 + ... + 400533.

It is an arithmetic number, because the mean of its divisors is an integer number (24422265).

Almost surely, 2^135323201 is an apocalyptic number.

It is an amenable number.

135323201 is a deficient number, since it is larger than the sum of its proper divisors (11210389).

135323201 is an equidigital number, since it uses as much as digits as its factorization.

135323201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800755 (or 800742 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 135323201 is about 11632.8500806982. The cubic root of 135323201 is about 513.4018399135.

Adding to 135323201 its reverse (102323531), we get a palindrome (237646732).

The spelling of 135323201 in words is "one hundred thirty-five million, three hundred twenty-three thousand, two hundred one".