1002303011321 has 4 divisors (see below), whose sum is σ = 1002436144500. Its totient is φ = 1002169878144.

The previous prime is 1002303011317. The next prime is 1002303011363. The reversal of 1002303011321 is 1231103032001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 502878121321 + 499424890000 = 709139^2 + 706700^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002303011321 - 2² = 1002303011317 is a prime.

It is a super-2 number, since 2×1002303011321² (a number of 25 digits) contains 22 as substring.

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 1002303011321.

It is not an unprimeable number, because it can be changed into a prime (1002303011371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66555296 + ... + 66570353.

It is an arithmetic number, because the mean of its divisors is an integer number (250609036125).

Almost surely, 2^{1002303011321} is an apocalyptic number.

It is an amenable number.

1002303011321 is a deficient number, since it is larger than the sum of its proper divisors (133133179).

1002303011321 is an equidigital number, since it uses as much as digits as its factorization.

1002303011321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133133178.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 1002303011321 its reverse (1231103032001), we get a palindrome (2233406043322).

The spelling of 1002303011321 in words is "one trillion, two billion, three hundred three million, eleven thousand, three hundred twenty-one".