30943 has 8 divisors (see below), whose sum is σ = 35280. Its totient is φ = 26880.

The previous prime is 30941. The next prime is 30949. The reversal of 30943 is 34903.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30943 - 2¹ = 30941 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

30943 is a lucky number.

It is a plaindrome in base 13 and base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 30943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271 + ... + 367.

It is an arithmetic number, because the mean of its divisors is an integer number (4410).

2³⁰⁹⁴³ is an apocalyptic number.

30943 is a deficient number, since it is larger than the sum of its proper divisors (4337).

30943 is a wasteful number, since it uses less digits than its factorization.

30943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 30943 is about 175.9062250178. The cubic root of 30943 is about 31.3945410879.

The spelling of 30943 in words is "thirty thousand, nine hundred forty-three".