193208923 has 2 divisors, whose sum is σ = 193208924. Its totient is φ = 193208922.

The previous prime is 193208863. The next prime is 193208941. The reversal of 193208923 is 329802391.

It is a strong prime.

It is an emirp because it is prime and its reverse (329802391) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-193208923 is a prime.

It is not a weakly prime, because it can be changed into another prime (193208123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96604461 + 96604462.

It is an arithmetic number, because the mean of its divisors is an integer number (96604462).

Almost surely, 2^193208923 is an apocalyptic number.

193208923 is a deficient number, since it is larger than the sum of its proper divisors (1).

193208923 is an equidigital number, since it uses as much as digits as its factorization.

193208923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 193208923 is about 13899.9612589388. The cubic root of 193208923 is about 578.1081072756.

The spelling of 193208923 in words is "one hundred ninety-three million, two hundred eight thousand, nine hundred twenty-three".