193081 has 4 divisors (see below), whose sum is σ = 220672. Its totient is φ = 165492.

The previous prime is 193073. The next prime is 193093. The reversal of 193081 is 180391.

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 193081 - 2³ = 193073 is a prime.

It is a super-2 number, since 2×193081² = 74560545122, which contains 22 as substring.

It is a Duffinian number.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13785 + ... + 13798.

It is an arithmetic number, because the mean of its divisors is an integer number (55168).

2¹⁹³⁰⁸¹ is an apocalyptic number.

It is an amenable number.

193081 is a deficient number, since it is larger than the sum of its proper divisors (27591).

193081 is an equidigital number, since it uses as much as digits as its factorization.

193081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27590.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 193081 is about 439.4098314785. The cubic root of 193081 is about 57.7980491274.

The spelling of 193081 in words is "one hundred ninety-three thousand, eighty-one".