Search a number
-
+
312312025 = 5219657499
BaseRepresentation
bin10010100111011…
…000000011011001
3210202200002120001
4102213120003121
51114422441100
650553533001
710511415454
oct2247300331
9722602501
10312312025
11150323713
1288714161
134c91bb1c
142d69a49b
151c641d6a
hex129d80d9

312312025 has 12 divisors (see below), whose sum is σ = 407650000. Its totient is φ = 236699280.

The previous prime is 312312019. The next prime is 312312029. The reversal of 312312025 is 520213213.

It is not a de Polignac number, because 312312025 - 29 = 312311513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a zygodrome in base 5.

It is a junction number, because it is equal to n+sod(n) for n = 312311993 and 312312011.

It is not an unprimeable number, because it can be changed into a prime (312312029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 328275 + ... + 329224.

Almost surely, 2312312025 is an apocalyptic number.

It is an amenable number.

312312025 is a deficient number, since it is larger than the sum of its proper divisors (95337975).

312312025 is a wasteful number, since it uses less digits than its factorization.

312312025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657528 (or 657523 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 312312025 is about 17672.3519940046. The cubic root of 312312025 is about 678.4683121507.

Adding to 312312025 its reverse (520213213), we get a palindrome (832525238).

The spelling of 312312025 in words is "three hundred twelve million, three hundred twelve thousand, twenty-five".

Divisors: 1 5 19 25 95 475 657499 3287495 12492481 16437475 62462405 312312025