135131253 has 8 divisors (see below), whose sum is σ = 180400416. Its totient is φ = 89974800.

The previous prime is 135131237. The next prime is 135131273. The reversal of 135131253 is 352131531.

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

It is not a de Polignac number, because 135131253 - 2⁴ = 135131237 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135131273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25338 + ... + 30203.

It is an arithmetic number, because the mean of its divisors is an integer number (22550052).

Almost surely, 2^135131253 is an apocalyptic number.

It is an amenable number.

135131253 is a deficient number, since it is larger than the sum of its proper divisors (45269163).

135131253 is an equidigital number, since it uses as much as digits as its factorization.

135131253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56355.

The product of its digits is 1350, while the sum is 24.

The square root of 135131253 is about 11624.5968962369. The cubic root of 135131253 is about 513.1589816145.

Adding to 135131253 its reverse (352131531), we get a palindrome (487262784).

It can be divided in two parts, 135131 and 253, that multiplied together give a palindrome (34188143).

The spelling of 135131253 in words is "one hundred thirty-five million, one hundred thirty-one thousand, two hundred fifty-three".