30983 has 2 divisors, whose sum is σ = 30984. Its totient is φ = 30982.

The previous prime is 30977. The next prime is 31013. The reversal of 30983 is 38903.

It is a weak prime.

It is an emirp because it is prime and its reverse (38903) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30983 - 2⁸ = 30727 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

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

It is a plaindrome in base 13.

It is a nialpdrome in base 14.

It is a zygodrome in base 13.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15491 + 15492.

It is an arithmetic number, because the mean of its divisors is an integer number (15492).

2³⁰⁹⁸³ is an apocalyptic number.

30983 is a deficient number, since it is larger than the sum of its proper divisors (1).

30983 is an equidigital number, since it uses as much as digits as its factorization.

30983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 30983 is about 176.0198852403. The cubic root of 30983 is about 31.4080631652.

The spelling of 30983 in words is "thirty thousand, nine hundred eighty-three".