30420983 has 2 divisors, whose sum is σ = 30420984. Its totient is φ = 30420982.

The previous prime is 30420977. The next prime is 30420989. The reversal of 30420983 is 38902403.

It is a balanced prime because it is at equal distance from previous prime (30420977) and next prime (30420989).

It is an emirp because it is prime and its reverse (38902403) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30420983 - 2¹⁴ = 30404599 is a prime.

It is a super-3 number, since 3×30420983³ (a number of 23 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30420989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15210491 + 15210492.

It is an arithmetic number, because the mean of its divisors is an integer number (15210492).

Almost surely, 2^30420983 is an apocalyptic number.

30420983 is a deficient number, since it is larger than the sum of its proper divisors (1).

30420983 is an equidigital number, since it uses as much as digits as its factorization.

30420983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 30420983 is about 5515.5220061205. The cubic root of 30420983 is about 312.1699401563.

The spelling of 30420983 in words is "thirty million, four hundred twenty thousand, nine hundred eighty-three".