313201221031 has 2 divisors, whose sum is σ = 313201221032. Its totient is φ = 313201221030.

The previous prime is 313201221023. The next prime is 313201221037. The reversal of 313201221031 is 130122102313.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 313201221031 - 2³ = 313201221023 is a prime.

It is a super-2 number, since 2×313201221031² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313201221037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156600610515 + 156600610516.

It is an arithmetic number, because the mean of its divisors is an integer number (156600610516).

Almost surely, 2^313201221031 is an apocalyptic number.

313201221031 is a deficient number, since it is larger than the sum of its proper divisors (1).

313201221031 is an equidigital number, since it uses as much as digits as its factorization.

313201221031 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 19.

Adding to 313201221031 its reverse (130122102313), we get a palindrome (443323323344).

The spelling of 313201221031 in words is "three hundred thirteen billion, two hundred one million, two hundred twenty-one thousand, thirty-one".