21031000283 has 2 divisors, whose sum is σ = 21031000284. Its totient is φ = 21031000282.

The previous prime is 21031000223. The next prime is 21031000351. The reversal of 21031000283 is 38200013012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21031000283 - 2⁶ = 21031000219 is a prime.

It is not a weakly prime, because it can be changed into another prime (21031000223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10515500141 + 10515500142.

It is an arithmetic number, because the mean of its divisors is an integer number (10515500142).

Almost surely, 2^21031000283 is an apocalyptic number.

21031000283 is a deficient number, since it is larger than the sum of its proper divisors (1).

21031000283 is an equidigital number, since it uses as much as digits as its factorization.

21031000283 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21031000283 its reverse (38200013012), we get a palindrome (59231013295).

The spelling of 21031000283 in words is "twenty-one billion, thirty-one million, two hundred eighty-three", and thus it is an aban number.