313440263 has 2 divisors, whose sum is σ = 313440264. Its totient is φ = 313440262.

The previous prime is 313440247. The next prime is 313440301. The reversal of 313440263 is 362044313.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (362044313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 313440263 - 2⁴ = 313440247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313440563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156720131 + 156720132.

It is an arithmetic number, because the mean of its divisors is an integer number (156720132).

Almost surely, 2^313440263 is an apocalyptic number.

313440263 is a deficient number, since it is larger than the sum of its proper divisors (1).

313440263 is an equidigital number, since it uses as much as digits as its factorization.

313440263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 313440263 is about 17704.2442086636. The cubic root of 313440263 is about 679.2843270643.

Adding to 313440263 its reverse (362044313), we get a palindrome (675484576).

The spelling of 313440263 in words is "three hundred thirteen million, four hundred forty thousand, two hundred sixty-three".