193143 has 4 divisors (see below), whose sum is σ = 257528. Its totient is φ = 128760.

The previous prime is 193139. The next prime is 193147. The reversal of 193143 is 341391.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341391 = 3 ⋅113797.

It is an interprime number because it is at equal distance from previous prime (193139) and next prime (193147).

It is not a de Polignac number, because 193143 - 2² = 193139 is a prime.

It is a D-number.

It is a Duffinian number.

193143 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (193147) 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, 32188 + ... + 32193.

It is an arithmetic number, because the mean of its divisors is an integer number (64382).

2¹⁹³¹⁴³ is an apocalyptic number.

193143 is a deficient number, since it is larger than the sum of its proper divisors (64385).

193143 is an equidigital number, since it uses as much as digits as its factorization.

193143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64384.

The product of its digits is 324, while the sum is 21.

The square root of 193143 is about 439.4803749885. The cubic root of 193143 is about 57.8042349519.

The spelling of 193143 in words is "one hundred ninety-three thousand, one hundred forty-three".