135131422 has 4 divisors (see below), whose sum is σ = 202697136. Its totient is φ = 67565710.

The previous prime is 135131393. The next prime is 135131431. The reversal of 135131422 is 224131531.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 135131393 and 135131402.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 33782854 + ... + 33782857.

It is an arithmetic number, because the mean of its divisors is an integer number (50674284).

Almost surely, 2^135131422 is an apocalyptic number.

135131422 is a deficient number, since it is larger than the sum of its proper divisors (67565714).

135131422 is an equidigital number, since it uses as much as digits as its factorization.

135131422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67565713.

The product of its digits is 720, while the sum is 22.

The square root of 135131422 is about 11624.6041653039. The cubic root of 135131422 is about 513.1591955394.

Adding to 135131422 its reverse (224131531), we get a palindrome (359262953).

The spelling of 135131422 in words is "one hundred thirty-five million, one hundred thirty-one thousand, four hundred twenty-two".