312203 has 2 divisors, whose sum is σ = 312204.
Its totient is φ = 312202.
The previous prime is 312199. The next prime is 312209. The reversal of 312203 is 302213.
It is a weak prime.
It is an emirp because it is prime and its reverse (302213) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 312203 - 22 = 312199 is a prime.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 312203.
It is not a weakly prime, because it can be changed into another prime (312209) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156101 + 156102.
It is an arithmetic number, because the mean of its divisors is an integer number (156102).
2312203 is an apocalyptic number.
312203 is a deficient number, since it is larger than the sum of its proper divisors (1).
312203 is an equidigital number, since it uses as much as digits as its factorization.
312203 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 36, while the sum is 11.
The square root of 312203 is about 558.7512863520.
The cubic root of 312203 is about 67.8389354131.
Adding to 312203 its reverse (302213), we get a palindrome (614416).
It can be divided in two parts, 312 and 203, that multiplied together give a palindrome (63336).
The spelling of 312203 in words is "three hundred twelve thousand, two hundred three", and thus it is an iban number.