1428313 has 4 divisors (see below), whose sum is σ = 1431568. Its totient is φ = 1425060.

The previous prime is 1428281. The next prime is 1428359. The reversal of 1428313 is 3138241.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3138241 = 97 ⋅32353.

It is a cyclic number.

It is not a de Polignac number, because 1428313 - 2⁵ = 1428281 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1428013) 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, 843 + ... + 1888.

It is an arithmetic number, because the mean of its divisors is an integer number (357892).

2^1428313 is an apocalyptic number.

It is an amenable number.

1428313 is a deficient number, since it is larger than the sum of its proper divisors (3255).

1428313 is an equidigital number, since it uses as much as digits as its factorization.

1428313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3254.

The product of its digits is 576, while the sum is 22.

The square root of 1428313 is about 1195.1204960170. The cubic root of 1428313 is about 112.6179963601.

The spelling of 1428313 in words is "one million, four hundred twenty-eight thousand, three hundred thirteen".