135311405 has 8 divisors (see below), whose sum is σ = 166762392. Its totient is φ = 105323328.

The previous prime is 135311399. The next prime is 135311447. The reversal of 135311405 is 504113531.

It can be written as a sum of positive squares in 4 ways, for example, as 41550916 + 93760489 = 6446^2 + 9683^2 .

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 135311405 - 2⁴ = 135311389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 365522 + ... + 365891.

It is an arithmetic number, because the mean of its divisors is an integer number (20845299).

Almost surely, 2^135311405 is an apocalyptic number.

It is an amenable number.

135311405 is a deficient number, since it is larger than the sum of its proper divisors (31450987).

135311405 is an equidigital number, since it uses as much as digits as its factorization.

135311405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731455.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 135311405 is about 11632.3430571833. The cubic root of 135311405 is about 513.3869218900.

Adding to 135311405 its reverse (504113531), we get a palindrome (639424936).

The spelling of 135311405 in words is "one hundred thirty-five million, three hundred eleven thousand, four hundred five".