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313342243 = 1916491697
BaseRepresentation
bin10010101011010…
…011100100100011
3210211121102202021
4102223103210203
51120203422433
651032002311
710523236144
oct2253234443
9724542667
10313342243
11150967735
1288b30397
134cbbca16
142d887acb
151c79722d
hex12ad3923

313342243 has 4 divisors (see below), whose sum is σ = 329833960. Its totient is φ = 296850528.

The previous prime is 313342231. The next prime is 313342261. The reversal of 313342243 is 342243313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342243313 = 536457421.

It is not a de Polignac number, because 313342243 - 213 = 313334051 is a prime.

It is a super-2 number, since 2×3133422432 = 196366722496542098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313342273) 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, 8245830 + ... + 8245867.

It is an arithmetic number, because the mean of its divisors is an integer number (82458490).

Almost surely, 2313342243 is an apocalyptic number.

313342243 is a deficient number, since it is larger than the sum of its proper divisors (16491717).

313342243 is a wasteful number, since it uses less digits than its factorization.

313342243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16491716.

The product of its digits is 5184, while the sum is 25.

The square root of 313342243 is about 17701.4757294413. The cubic root of 313342243 is about 679.2135103893.

Adding to 313342243 its reverse (342243313), we get a palindrome (655585556).

The spelling of 313342243 in words is "three hundred thirteen million, three hundred forty-two thousand, two hundred forty-three".

Divisors: 1 19 16491697 313342243