134430523 has 4 divisors (see below), whose sum is σ = 134988568. Its totient is φ = 133872480.

The previous prime is 134430511. The next prime is 134430533. The reversal of 134430523 is 325034431.

134430523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 325034431 = 157 ⋅2070283.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134430523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134430503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278661 + ... + 279142.

It is an arithmetic number, because the mean of its divisors is an integer number (33747142).

Almost surely, 2^134430523 is an apocalyptic number.

134430523 is a deficient number, since it is larger than the sum of its proper divisors (558045).

134430523 is an equidigital number, since it uses as much as digits as its factorization.

134430523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558044.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 134430523 is about 11594.4177516596. The cubic root of 134430523 is about 512.2704399625.

Adding to 134430523 its reverse (325034431), we get a palindrome (459464954).

The spelling of 134430523 in words is "one hundred thirty-four million, four hundred thirty thousand, five hundred twenty-three".