135431222 has 16 divisors (see below), whose sum is σ = 214970112. Its totient is φ = 63857640.

The previous prime is 135431207. The next prime is 135431227. The reversal of 135431222 is 222134531.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135431227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17468 + ... + 23999.

It is an arithmetic number, because the mean of its divisors is an integer number (13435632).

Almost surely, 2^135431222 is an apocalyptic number.

135431222 is a deficient number, since it is larger than the sum of its proper divisors (79538890).

135431222 is a wasteful number, since it uses less digits than its factorization.

135431222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41563.

The product of its digits is 1440, while the sum is 23.

The square root of 135431222 is about 11637.4920837782. The cubic root of 135431222 is about 513.5384103116.

Adding to 135431222 its reverse (222134531), we get a palindrome (357565753).

The spelling of 135431222 in words is "one hundred thirty-five million, four hundred thirty-one thousand, two hundred twenty-two".