135031205 has 4 divisors (see below), whose sum is σ = 162037452. Its totient is φ = 108024960.

The previous prime is 135031201. The next prime is 135031207. The reversal of 135031205 is 502130531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 82047364 + 52983841 = 9058^2 + 7279^2 .

It is not a de Polignac number, because 135031205 - 2² = 135031201 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135031201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13503116 + ... + 13503125.

It is an arithmetic number, because the mean of its divisors is an integer number (40509363).

Almost surely, 2^135031205 is an apocalyptic number.

It is an amenable number.

135031205 is a deficient number, since it is larger than the sum of its proper divisors (27006247).

135031205 is an equidigital number, since it uses as much as digits as its factorization.

135031205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27006246.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 135031205 is about 11620.2928104244. The cubic root of 135031205 is about 513.0323067353.

Adding to 135031205 its reverse (502130531), we get a palindrome (637161736).

The spelling of 135031205 in words is "one hundred thirty-five million, thirty-one thousand, two hundred five".