313042243 has 2 divisors, whose sum is σ = 313042244. Its totient is φ = 313042242.

The previous prime is 313042201. The next prime is 313042253. The reversal of 313042243 is 342240313.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (342240313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 313042243 - 2⁹ = 313041731 is a prime.

It is not a weakly prime, because it can be changed into another prime (313042253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156521121 + 156521122.

It is an arithmetic number, because the mean of its divisors is an integer number (156521122).

Almost surely, 2^313042243 is an apocalyptic number.

313042243 is a deficient number, since it is larger than the sum of its proper divisors (1).

313042243 is an equidigital number, since it uses as much as digits as its factorization.

313042243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 313042243 is about 17692.9998304414. Note that the first 3 decimals coincide. The cubic root of 313042243 is about 678.9966770689.

Adding to 313042243 its reverse (342240313), we get a palindrome (655282556).

The spelling of 313042243 in words is "three hundred thirteen million, forty-two thousand, two hundred forty-three".