135440343 has 40 divisors (see below), whose sum is σ = 219542400. Its totient is φ = 82874880.

The previous prime is 135440329. The next prime is 135440351. The reversal of 135440343 is 343044531.

135440343 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 135440343 - 2⁸ = 135440087 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135440363) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 55258 + ... + 57656.

It is an arithmetic number, because the mean of its divisors is an integer number (5488560).

Almost surely, 2^135440343 is an apocalyptic number.

135440343 is a deficient number, since it is larger than the sum of its proper divisors (84102057).

135440343 is a wasteful number, since it uses less digits than its factorization.

135440343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2469 (or 2460 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 135440343 is about 11637.8839571462. The cubic root of 135440343 is about 513.5499386200.

Adding to 135440343 its reverse (343044531), we get a palindrome (478484874).

The spelling of 135440343 in words is "one hundred thirty-five million, four hundred forty thousand, three hundred forty-three".