1373287 has 4 divisors (see below), whose sum is σ = 1380456. Its totient is φ = 1366120.

The previous prime is 1373233. The next prime is 1373321. The reversal of 1373287 is 7823731.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1373287 - 2⁷ = 1373159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1373227) 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, 3289 + ... + 3682.

It is an arithmetic number, because the mean of its divisors is an integer number (345114).

2^1373287 is an apocalyptic number.

1373287 is a deficient number, since it is larger than the sum of its proper divisors (7169).

1373287 is an equidigital number, since it uses as much as digits as its factorization.

1373287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7168.

The product of its digits is 7056, while the sum is 31.

The square root of 1373287 is about 1171.8732866654. The cubic root of 1373287 is about 111.1528074249.

The spelling of 1373287 in words is "one million, three hundred seventy-three thousand, two hundred eighty-seven".