135431254 has 16 divisors (see below), whose sum is σ = 235634688. Its totient is φ = 57175272.

The previous prime is 135431249. The next prime is 135431267. The reversal of 135431254 is 452134531.

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, 71254 + ... + 73129.

It is an arithmetic number, because the mean of its divisors is an integer number (14727168).

Almost surely, 2^135431254 is an apocalyptic number.

135431254 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

135431254 is a deficient number, since it is larger than the sum of its proper divisors (100203434).

135431254 is a wasteful number, since it uses less digits than its factorization.

135431254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144459.

The product of its digits is 7200, while the sum is 28.

The square root of 135431254 is about 11637.4934586448. The cubic root of 135431254 is about 513.5384507583.

Adding to 135431254 its reverse (452134531), we get a palindrome (587565785).

The spelling of 135431254 in words is "one hundred thirty-five million, four hundred thirty-one thousand, two hundred fifty-four".