20983043 has 2 divisors, whose sum is σ = 20983044. Its totient is φ = 20983042.

The previous prime is 20983031. The next prime is 20983051. The reversal of 20983043 is 34038902.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20983043 - 2¹⁰ = 20982019 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 20982997 and 20983015.

It is not a weakly prime, because it can be changed into another prime (20983073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10491521 + 10491522.

It is an arithmetic number, because the mean of its divisors is an integer number (10491522).

Almost surely, 2^20983043 is an apocalyptic number.

20983043 is a deficient number, since it is larger than the sum of its proper divisors (1).

20983043 is an equidigital number, since it uses as much as digits as its factorization.

20983043 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 20983043 is about 4580.7251609325. The cubic root of 20983043 is about 275.8181387889.

The spelling of 20983043 in words is "twenty million, nine hundred eighty-three thousand, forty-three".