135423111 has 16 divisors (see below), whose sum is σ = 184016000. Its totient is φ = 88564320.

The previous prime is 135423107. The next prime is 135423131. The reversal of 135423111 is 111324531.

It is not a de Polignac number, because 135423111 - 2² = 135423107 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 (135423131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90576 + ... + 92058.

It is an arithmetic number, because the mean of its divisors is an integer number (11501000).

Almost surely, 2^135423111 is an apocalyptic number.

135423111 is a deficient number, since it is larger than the sum of its proper divisors (48592889).

135423111 is a wasteful number, since it uses less digits than its factorization.

135423111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2046.

The product of its digits is 360, while the sum is 21.

The square root of 135423111 is about 11637.1435928238. The cubic root of 135423111 is about 513.5281581380.

Adding to 135423111 its reverse (111324531), we get a palindrome (246747642).

It can be divided in two parts, 13542 and 3111, that added together give a triangular number (16653 = T₁₈₂).

The spelling of 135423111 in words is "one hundred thirty-five million, four hundred twenty-three thousand, one hundred eleven".