Search a number
-
+
312425 = 5212497
BaseRepresentation
bin1001100010001101001
3120212120022
41030101221
534444200
610410225
72440601
oct1142151
9525508
10312425
111a3803
12130975
13ac289
1481c01
1562885
hex4c469

312425 has 6 divisors (see below), whose sum is σ = 387438. Its totient is φ = 249920.

The previous prime is 312413. The next prime is 312427. The reversal of 312425 is 524213.

It can be written as a sum of positive squares in 3 ways, for example, as 21904 + 290521 = 148^2 + 539^2 .

It is not a de Polignac number, because 312425 - 214 = 296041 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 312425.

It is not an unprimeable number, because it can be changed into a prime (312427) 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, 6224 + ... + 6273.

It is an arithmetic number, because the mean of its divisors is an integer number (64573).

2312425 is an apocalyptic number.

It is an amenable number.

312425 is a deficient number, since it is larger than the sum of its proper divisors (75013).

312425 is a wasteful number, since it uses less digits than its factorization.

312425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12507 (or 12502 counting only the distinct ones).

The product of its digits is 240, while the sum is 17.

The square root of 312425 is about 558.9499083102. The cubic root of 312425 is about 67.8550111453.

Adding to 312425 its reverse (524213), we get a palindrome (836638).

It can be divided in two parts, 312 and 425, that added together give a palindrome (737).

The spelling of 312425 in words is "three hundred twelve thousand, four hundred twenty-five".

Divisors: 1 5 25 12497 62485 312425