193021 has 4 divisors (see below), whose sum is σ = 203200. Its totient is φ = 182844.

The previous prime is 193013. The next prime is 193031. The reversal of 193021 is 120391.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 193021 - 2³ = 193013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 192986 and 193004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (193031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5061 + ... + 5098.

It is an arithmetic number, because the mean of its divisors is an integer number (50800).

2¹⁹³⁰²¹ is an apocalyptic number.

It is an amenable number.

193021 is a deficient number, since it is larger than the sum of its proper divisors (10179).

193021 is a wasteful number, since it uses less digits than its factorization.

193021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10178.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 193021 is about 439.3415527810. The cubic root of 193021 is about 57.7920615846.

The spelling of 193021 in words is "one hundred ninety-three thousand, twenty-one".