1021303423 has 16 divisors (see below), whose sum is σ = 1195560000. Its totient is φ = 872069856.

The previous prime is 1021303403. The next prime is 1021303427. The reversal of 1021303423 is 3243031201.

It is not a de Polignac number, because 1021303423 - 2⁹ = 1021302911 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 1021303423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021303427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86733 + ... + 97801.

It is an arithmetic number, because the mean of its divisors is an integer number (74722500).

Almost surely, 2^1021303423 is an apocalyptic number.

1021303423 is a deficient number, since it is larger than the sum of its proper divisors (174256577).

1021303423 is an equidigital number, since it uses as much as digits as its factorization.

1021303423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11359 (or 11345 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1021303423 is about 31957.8382091155. The cubic root of 1021303423 is about 1007.0513032567.

Adding to 1021303423 its reverse (3243031201), we get a palindrome (4264334624).

The spelling of 1021303423 in words is "one billion, twenty-one million, three hundred three thousand, four hundred twenty-three".