1331373 has 4 divisors (see below), whose sum is σ = 1775168. Its totient is φ = 887580.

The previous prime is 1331347. The next prime is 1331377. The reversal of 1331373 is 3731331.

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 1331373 - 2²⁰ = 282797 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331377) 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, 221893 + ... + 221898.

It is an arithmetic number, because the mean of its divisors is an integer number (443792).

2^1331373 is an apocalyptic number.

It is an amenable number.

1331373 is a deficient number, since it is larger than the sum of its proper divisors (443795).

1331373 is an equidigital number, since it uses as much as digits as its factorization.

1331373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443794.

The product of its digits is 567, while the sum is 21.

The square root of 1331373 is about 1153.8513769113. The cubic root of 1331373 is about 110.0102745224.

The spelling of 1331373 in words is "one million, three hundred thirty-one thousand, three hundred seventy-three".