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312311 is a prime number
BaseRepresentation
bin1001100001111110111
3120212102002
41030033313
534443221
610405515
72440346
oct1141767
9525362
10312311
111a370a
1213089b
13ac1cc
1481b5d
156280b
hex4c3f7

312311 has 2 divisors, whose sum is σ = 312312. Its totient is φ = 312310.

The previous prime is 312289. The next prime is 312313. The reversal of 312311 is 113213.

It is a strong prime.

It is an emirp because it is prime and its reverse (113213) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-312311 is a prime.

Together with 312313, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 312292 and 312301.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 312311.

It is not a weakly prime, because it can be changed into another prime (312313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156155 + 156156.

It is an arithmetic number, because the mean of its divisors is an integer number (156156).

2312311 is an apocalyptic number.

312311 is a deficient number, since it is larger than the sum of its proper divisors (1).

312311 is an equidigital number, since it uses as much as digits as its factorization.

312311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18, while the sum is 11.

The square root of 312311 is about 558.8479220682. The cubic root of 312311 is about 67.8467569911.

Adding to 312311 its reverse (113213), we get a palindrome (425524).

The spelling of 312311 in words is "three hundred twelve thousand, three hundred eleven", and thus it is an iban number.