1321301001303 has 12 divisors (see below), whose sum is σ = 1909524155968. Its totient is φ = 880415827200.

The previous prime is 1321301001281. The next prime is 1321301001311. The reversal of 1321301001303 is 3031001031231.

It is a happy number.

1321301001303 is a `hidden beast` number, since 1 + 321 + 30 + 10 + 0 + 1 + 303 = 666.

It is not a de Polignac number, because 1321301001303 - 2²¹ = 1321298904151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321301001353) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37607050 + ... + 37642167.

Almost surely, 2^{1321301001303} is an apocalyptic number.

1321301001303 is a deficient number, since it is larger than the sum of its proper divisors (588223154665).

1321301001303 is a wasteful number, since it uses less digits than its factorization.

1321301001303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75251174 (or 75251171 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 1321301001303 its reverse (3031001031231), we get a palindrome (4352302032534).

The spelling of 1321301001303 in words is "one trillion, three hundred twenty-one billion, three hundred one million, one thousand, three hundred three".