428313 has 4 divisors (see below), whose sum is σ = 571088. Its totient is φ = 285540.

The previous prime is 428303. The next prime is 428339. The reversal of 428313 is 313824.

It is a happy number.

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 428313 - 2⁴ = 428297 is a prime.

It is a D-number.

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 428313.

It is not an unprimeable number, because it can be changed into a prime (428303) 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, 71383 + ... + 71388.

It is an arithmetic number, because the mean of its divisors is an integer number (142772).

2⁴²⁸³¹³ is an apocalyptic number.

It is an amenable number.

428313 is a deficient number, since it is larger than the sum of its proper divisors (142775).

428313 is a wasteful number, since it uses less digits than its factorization.

428313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142774.

The product of its digits is 576, while the sum is 21.

The square root of 428313 is about 654.4562628625. The cubic root of 428313 is about 75.3795867223.

It can be divided in two parts, 428 and 313, that added together give a triangular number (741 = T₃₈).

The spelling of 428313 in words is "four hundred twenty-eight thousand, three hundred thirteen".