1001373 has 4 divisors (see below), whose sum is σ = 1335168. Its totient is φ = 667580.

The previous prime is 1001369. The next prime is 1001381. The reversal of 1001373 is 3731001.

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 not a de Polignac number, because 1001373 - 2² = 1001369 is a prime.

It is a D-number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166893 + ... + 166898.

It is an arithmetic number, because the mean of its divisors is an integer number (333792).

2^1001373 is an apocalyptic number.

It is an amenable number.

1001373 is a deficient number, since it is larger than the sum of its proper divisors (333795).

1001373 is an equidigital number, since it uses as much as digits as its factorization.

1001373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333794.

The product of its (nonzero) digits is 63, while the sum is 15.

The square root of 1001373 is about 1000.6862645205. The cubic root of 1001373 is about 100.0457457368.

Adding to 1001373 its reverse (3731001), we get a palindrome (4732374).

It can be divided in two parts, 1001 and 373, that multiplied together give a palindrome (373373).

The spelling of 1001373 in words is "one million, one thousand, three hundred seventy-three".