134923823 has 4 divisors (see below), whose sum is σ = 135513240. Its totient is φ = 134334408.

The previous prime is 134923813. The next prime is 134923829. The reversal of 134923823 is 328329431.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134923823 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 (134923829) 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, 294365 + ... + 294822.

It is an arithmetic number, because the mean of its divisors is an integer number (33878310).

Almost surely, 2^134923823 is an apocalyptic number.

134923823 is a deficient number, since it is larger than the sum of its proper divisors (589417).

134923823 is an equidigital number, since it uses as much as digits as its factorization.

134923823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589416.

The product of its digits is 31104, while the sum is 35.

The square root of 134923823 is about 11615.6714399125. The cubic root of 134923823 is about 512.8962763391.

The spelling of 134923823 in words is "one hundred thirty-four million, nine hundred twenty-three thousand, eight hundred twenty-three".