313122503 has 2 divisors, whose sum is σ = 313122504. Its totient is φ = 313122502.

The previous prime is 313122487. The next prime is 313122571. The reversal of 313122503 is 305221313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 313122503 - 2⁴ = 313122487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313121503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156561251 + 156561252.

It is an arithmetic number, because the mean of its divisors is an integer number (156561252).

Almost surely, 2^313122503 is an apocalyptic number.

313122503 is a deficient number, since it is larger than the sum of its proper divisors (1).

313122503 is an equidigital number, since it uses as much as digits as its factorization.

313122503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 313122503 is about 17695.2678137405. The cubic root of 313122503 is about 679.0547007784.

Adding to 313122503 its reverse (305221313), we get a palindrome (618343816).

The spelling of 313122503 in words is "three hundred thirteen million, one hundred twenty-two thousand, five hundred three".