312213121320231 has 6 divisors (see below), whose sum is σ = 450974508573680. Its totient is φ = 208142080880148.

The previous prime is 312213121320229. The next prime is 312213121320241. The reversal of 312213121320231 is 132023121312213.

312213121320231 is a `hidden beast` number, since 3 + 1 + 2 + 2 + 1 + 312 + 1 + 320 + 23 + 1 = 666.

It is not a de Polignac number, because 312213121320231 - 2¹ = 312213121320229 is a prime.

It is a super-2 number, since 2×312213121320231² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312213121320195 and 312213121320204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312213121320241) 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 in 5 ways as a sum of consecutive naturals, for example, 17345173406671 + ... + 17345173406688.

Almost surely, 2^{312213121320231} is an apocalyptic number.

312213121320231 is a deficient number, since it is larger than the sum of its proper divisors (138761387253449).

312213121320231 is a wasteful number, since it uses less digits than its factorization.

312213121320231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34690346813365 (or 34690346813362 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 312213121320231 its reverse (132023121312213), we get a palindrome (444236242632444).

The spelling of 312213121320231 in words is "three hundred twelve trillion, two hundred thirteen billion, one hundred twenty-one million, three hundred twenty thousand, two hundred thirty-one".