312020321131 has 2 divisors, whose sum is σ = 312020321132. Its totient is φ = 312020321130.

The previous prime is 312020321113. The next prime is 312020321147. The reversal of 312020321131 is 131123020213.

Together with previous prime (312020321113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (131123020213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 312020321131 - 2²³ = 312011932523 is a prime.

It is a super-2 number, since 2×312020321131² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 312020321099 and 312020321108.

It is not a weakly prime, because it can be changed into another prime (312020321101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156010160565 + 156010160566.

It is an arithmetic number, because the mean of its divisors is an integer number (156010160566).

Almost surely, 2^312020321131 is an apocalyptic number.

312020321131 is a deficient number, since it is larger than the sum of its proper divisors (1).

312020321131 is an equidigital number, since it uses as much as digits as its factorization.

312020321131 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 312020321131 its reverse (131123020213), we get a palindrome (443143341344).

The spelling of 312020321131 in words is "three hundred twelve billion, twenty million, three hundred twenty-one thousand, one hundred thirty-one".