1302231001321 has 4 divisors (see below), whose sum is σ = 1303143568272. Its totient is φ = 1301318434372.

The previous prime is 1302231001297. The next prime is 1302231001361. The reversal of 1302231001321 is 1231001322031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1302231001321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1302231001361) 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, 456281335 + ... + 456284188.

It is an arithmetic number, because the mean of its divisors is an integer number (325785892068).

Almost surely, 2^{1302231001321} is an apocalyptic number.

It is an amenable number.

1302231001321 is a deficient number, since it is larger than the sum of its proper divisors (912566951).

1302231001321 is an equidigital number, since it uses as much as digits as its factorization.

1302231001321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912566950.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1302231001321 its reverse (1231001322031), we get a palindrome (2533232323352).

The spelling of 1302231001321 in words is "one trillion, three hundred two billion, two hundred thirty-one million, one thousand, three hundred twenty-one".