313121183 has 2 divisors, whose sum is σ = 313121184. Its totient is φ = 313121182.

The previous prime is 313121153. The next prime is 313121203. The reversal of 313121183 is 381121313.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 313121183 - 2⁶ = 313121119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313121143) 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, 156560591 + 156560592.

It is an arithmetic number, because the mean of its divisors is an integer number (156560592).

Almost surely, 2^313121183 is an apocalyptic number.

313121183 is a deficient number, since it is larger than the sum of its proper divisors (1).

313121183 is an equidigital number, since it uses as much as digits as its factorization.

313121183 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 23.

The square root of 313121183 is about 17695.2305155937. The cubic root of 313121183 is about 679.0537465689.

Adding to 313121183 its reverse (381121313), we get a palindrome (694242496).

The spelling of 313121183 in words is "three hundred thirteen million, one hundred twenty-one thousand, one hundred eighty-three".