312298249 has 2 divisors, whose sum is σ = 312298250. Its totient is φ = 312298248.

The previous prime is 312298229. The next prime is 312298267. The reversal of 312298249 is 942892213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 301196025 + 11102224 = 17355^2 + 3332^2 .

It is an emirp because it is prime and its reverse (942892213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 312298249 - 2¹³ = 312290057 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (312298229) 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 as a sum of consecutive naturals, namely, 156149124 + 156149125.

It is an arithmetic number, because the mean of its divisors is an integer number (156149125).

Almost surely, 2^312298249 is an apocalyptic number.

It is an amenable number.

312298249 is a deficient number, since it is larger than the sum of its proper divisors (1).

312298249 is an equidigital number, since it uses as much as digits as its factorization.

312298249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 40.

The square root of 312298249 is about 17671.9622283435. The cubic root of 312298249 is about 678.4583363186.

The spelling of 312298249 in words is "three hundred twelve million, two hundred ninety-eight thousand, two hundred forty-nine".