193129423 has 4 divisors (see below), whose sum is σ = 193217920. Its totient is φ = 193040928.

The previous prime is 193129421. The next prime is 193129427. The reversal of 193129423 is 324921391.

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

It is a cyclic number.

It is not a de Polignac number, because 193129423 - 2¹ = 193129421 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 (193129421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40890 + ... + 45367.

It is an arithmetic number, because the mean of its divisors is an integer number (48304480).

Almost surely, 2^193129423 is an apocalyptic number.

193129423 is a deficient number, since it is larger than the sum of its proper divisors (88497).

193129423 is an equidigital number, since it uses as much as digits as its factorization.

193129423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88496.

The product of its digits is 11664, while the sum is 34.

The square root of 193129423 is about 13897.1012445042. The cubic root of 193129423 is about 578.0288046931.

The spelling of 193129423 in words is "one hundred ninety-three million, one hundred twenty-nine thousand, four hundred twenty-three".