313220123 has 2 divisors, whose sum is σ = 313220124. Its totient is φ = 313220122.

The previous prime is 313220099. The next prime is 313220129. The reversal of 313220123 is 321022313.

It is a strong prime.

It is an emirp because it is prime and its reverse (321022313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 313220123 - 2¹⁰ = 313219099 is a prime.

It is not a weakly prime, because it can be changed into another prime (313220129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156610061 + 156610062.

It is an arithmetic number, because the mean of its divisors is an integer number (156610062).

Almost surely, 2^313220123 is an apocalyptic number.

313220123 is a deficient number, since it is larger than the sum of its proper divisors (1).

313220123 is an equidigital number, since it uses as much as digits as its factorization.

313220123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 313220123 is about 17698.0259633666. The cubic root of 313220123 is about 679.1252614819.

Adding to 313220123 its reverse (321022313), we get a palindrome (634242436).

The spelling of 313220123 in words is "three hundred thirteen million, two hundred twenty thousand, one hundred twenty-three".