1321230303 has 24 divisors (see below), whose sum is σ = 2011292400. Its totient is φ = 833462784.

The previous prime is 1321230283. The next prime is 1321230347. The reversal of 1321230303 is 3030321231.

1321230303 is a `hidden beast` number, since 132 + 1 + 230 + 303 = 666.

It is not a de Polignac number, because 1321230303 - 2⁸ = 1321230047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321230503) 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 in 23 ways as a sum of consecutive naturals, for example, 154701 + ... + 163017.

It is an arithmetic number, because the mean of its divisors is an integer number (83803850).

Almost surely, 2^1321230303 is an apocalyptic number.

1321230303 is a deficient number, since it is larger than the sum of its proper divisors (690062097).

1321230303 is a wasteful number, since it uses less digits than its factorization.

1321230303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9271 (or 9268 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 1321230303 is about 36348.7317935578. The cubic root of 1321230303 is about 1097.3020114240.

Adding to 1321230303 its reverse (3030321231), we get a palindrome (4351551534).

The spelling of 1321230303 in words is "one billion, three hundred twenty-one million, two hundred thirty thousand, three hundred three".