Search a number
-
+
312311323 is a prime number
BaseRepresentation
bin10010100111010…
…111111000011011
3210202200001121001
4102213113320123
51114422430243
650553525431
710511413432
oct2247277033
9722601531
10312311323
11150323135
1288713877
134c91b6cc
142d69a119
151c641a4d
hex129d7e1b

312311323 has 2 divisors, whose sum is σ = 312311324. Its totient is φ = 312311322.

The previous prime is 312311281. The next prime is 312311327. The reversal of 312311323 is 323113213.

It is a strong prime.

It is an emirp because it is prime and its reverse (323113213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 312311323 - 29 = 312310811 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 312311323.

It is not a weakly prime, because it can be changed into another prime (312311327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156155661 + 156155662.

It is an arithmetic number, because the mean of its divisors is an integer number (156155662).

Almost surely, 2312311323 is an apocalyptic number.

312311323 is a deficient number, since it is larger than the sum of its proper divisors (1).

312311323 is an equidigital number, since it uses as much as digits as its factorization.

312311323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 324, while the sum is 19.

The square root of 312311323 is about 17672.3321324606. The cubic root of 312311323 is about 678.4678038074.

Adding to 312311323 its reverse (323113213), we get a palindrome (635424536).

The spelling of 312311323 in words is "three hundred twelve million, three hundred eleven thousand, three hundred twenty-three".