313103210021321 has 4 divisors (see below), whose sum is σ = 313107356994432. Its totient is φ = 313099063048212.

The previous prime is 313103210021311. The next prime is 313103210021363. The reversal of 313103210021321 is 123120012301313.

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-313103210021321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313103210021311) 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 3 ways as a sum of consecutive naturals, for example, 2073373301 + ... + 2073524306.

It is an arithmetic number, because the mean of its divisors is an integer number (78276839248608).

Almost surely, 2^{313103210021321} is an apocalyptic number.

It is an amenable number.

313103210021321 is a deficient number, since it is larger than the sum of its proper divisors (4146973111).

313103210021321 is an equidigital number, since it uses as much as digits as its factorization.

313103210021321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4146973110.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 313103210021321 its reverse (123120012301313), we get a palindrome (436223222322634).

The spelling of 313103210021321 in words is "three hundred thirteen trillion, one hundred three billion, two hundred ten million, twenty-one thousand, three hundred twenty-one".