Search a number
-
+
313825 = 5212553
BaseRepresentation
bin1001100100111100001
3120221111011
41030213201
540020300
610420521
72444641
oct1144741
9527434
10313825
111a4866
12131741
13acac5
1482521
1562eba
hex4c9e1

313825 has 6 divisors (see below), whose sum is σ = 389174. Its totient is φ = 251040.

The previous prime is 313783. The next prime is 313829. The reversal of 313825 is 528313.

It can be written as a sum of positive squares in 3 ways, for example, as 104976 + 208849 = 324^2 + 457^2 .

It is not a de Polignac number, because 313825 - 213 = 305633 is a prime.

It is a super-2 number, since 2×3138252 = 196972261250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 313796 and 313805.

It is not an unprimeable number, because it can be changed into a prime (313829) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6252 + ... + 6301.

2313825 is an apocalyptic number.

It is an amenable number.

313825 is a deficient number, since it is larger than the sum of its proper divisors (75349).

313825 is a wasteful number, since it uses less digits than its factorization.

313825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12563 (or 12558 counting only the distinct ones).

The product of its digits is 720, while the sum is 22.

The square root of 313825 is about 560.2008568362. The cubic root of 313825 is about 67.9562146037.

The spelling of 313825 in words is "three hundred thirteen thousand, eight hundred twenty-five".

Divisors: 1 5 25 12553 62765 313825