312020321031 has 12 divisors (see below), whose sum is σ = 450731073520. Its totient is φ = 207997368480.

The previous prime is 312020321017. The next prime is 312020321033. The reversal of 312020321031 is 130123020213.

312020321031 is a `hidden beast` number, since 312 + 0 + 2 + 0 + 321 + 0 + 31 = 666.

It is not a de Polignac number, because 312020321031 - 2⁹ = 312020320519 is a prime.

It is a super-3 number, since 3×312020321031³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312020320995 and 312020321013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312020321033) 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 in 11 ways as a sum of consecutive naturals, for example, 1225510 + ... + 1458051.

Almost surely, 2^312020321031 is an apocalyptic number.

312020321031 is a deficient number, since it is larger than the sum of its proper divisors (138710752489).

312020321031 is a wasteful number, since it uses less digits than its factorization.

312020321031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2696486 (or 2696483 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 312020321031 its reverse (130123020213), we get a palindrome (442143341244).

The spelling of 312020321031 in words is "three hundred twelve billion, twenty million, three hundred twenty-one thousand, thirty-one".