20030983 has 4 divisors (see below), whose sum is σ = 22892560. Its totient is φ = 17169408.

The previous prime is 20030957. The next prime is 20030987. The reversal of 20030983 is 38903002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38903002 = 2 ⋅19451501.

It is a cyclic number.

It is not a de Polignac number, because 20030983 - 2¹³ = 20022791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20030987) 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 3 ways as a sum of consecutive naturals, for example, 1430778 + ... + 1430791.

It is an arithmetic number, because the mean of its divisors is an integer number (5723140).

Almost surely, 2^20030983 is an apocalyptic number.

20030983 is a deficient number, since it is larger than the sum of its proper divisors (2861577).

20030983 is an equidigital number, since it uses as much as digits as its factorization.

20030983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2861576.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 20030983 is about 4475.5986191793. The cubic root of 20030983 is about 271.5818573430.

Adding to 20030983 its reverse (38903002), we get a palindrome (58933985).

The spelling of 20030983 in words is "twenty million, thirty thousand, nine hundred eighty-three".