313015243 has 2 divisors, whose sum is σ = 313015244. Its totient is φ = 313015242.

The previous prime is 313015201. The next prime is 313015273. The reversal of 313015243 is 342510313.

It is a strong prime.

It is an emirp because it is prime and its reverse (342510313) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313015243 is a prime.

It is not a weakly prime, because it can be changed into another prime (313015273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156507621 + 156507622.

It is an arithmetic number, because the mean of its divisors is an integer number (156507622).

Almost surely, 2^313015243 is an apocalyptic number.

313015243 is a deficient number, since it is larger than the sum of its proper divisors (1).

313015243 is an equidigital number, since it uses as much as digits as its factorization.

313015243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 313015243 is about 17692.2368003596. The cubic root of 313015243 is about 678.9771552761.

Adding to 313015243 its reverse (342510313), we get a palindrome (655525556).

The spelling of 313015243 in words is "three hundred thirteen million, fifteen thousand, two hundred forty-three".