20971083 has 8 divisors (see below), whose sum is σ = 31955968. Its totient is φ = 11983464.

The previous prime is 20971063. The next prime is 20971121. The reversal of 20971083 is 38017902.

It is a happy number.

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

It is not a de Polignac number, because 20971083 - 2⁵ = 20971051 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20971083.

It is not an unprimeable number, because it can be changed into a prime (20971043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 499291 + ... + 499332.

It is an arithmetic number, because the mean of its divisors is an integer number (3994496).

Almost surely, 2^20971083 is an apocalyptic number.

20971083 is a deficient number, since it is larger than the sum of its proper divisors (10984885).

20971083 is an equidigital number, since it uses as much as digits as its factorization.

20971083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998633.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 20971083 is about 4579.4195046971. The cubic root of 20971083 is about 275.7657248486.

Adding to 20971083 its reverse (38017902), we get a palindrome (58988985).

The spelling of 20971083 in words is "twenty million, nine hundred seventy-one thousand, eighty-three".