1021343563 has 2 divisors, whose sum is σ = 1021343564. Its totient is φ = 1021343562.

The previous prime is 1021343551. The next prime is 1021343567. The reversal of 1021343563 is 3653431201.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021343563 is a prime.

It is not a weakly prime, because it can be changed into another prime (1021343567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510671781 + 510671782.

It is an arithmetic number, because the mean of its divisors is an integer number (510671782).

Almost surely, 2^1021343563 is an apocalyptic number.

1021343563 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021343563 is an equidigital number, since it uses as much as digits as its factorization.

1021343563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 1021343563 is about 31958.4662178897. The cubic root of 1021343563 is about 1007.0644963682.

Adding to 1021343563 its reverse (3653431201), we get a palindrome (4674774764).

The spelling of 1021343563 in words is "one billion, twenty-one million, three hundred forty-three thousand, five hundred sixty-three".