1373223174321 has 4 divisors (see below), whose sum is σ = 1830964232432. Its totient is φ = 915482116212.

The previous prime is 1373223174319. The next prime is 1373223174329. The reversal of 1373223174321 is 1234713223731.

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 not a de Polignac number, because 1373223174321 - 2¹ = 1373223174319 is a prime.

It is a super-3 number, since 3×1373223174321³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1373223174321.

It is not an unprimeable number, because it can be changed into a prime (1373223174329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228870529051 + ... + 228870529056.

It is an arithmetic number, because the mean of its divisors is an integer number (457741058108).

Almost surely, 2^{1373223174321} is an apocalyptic number.

It is an amenable number.

1373223174321 is a deficient number, since it is larger than the sum of its proper divisors (457741058111).

1373223174321 is an equidigital number, since it uses as much as digits as its factorization.

1373223174321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457741058110.

The product of its digits is 127008, while the sum is 39.

The spelling of 1373223174321 in words is "one trillion, three hundred seventy-three billion, two hundred twenty-three million, one hundred seventy-four thousand, three hundred twenty-one".