312220113231 has 8 divisors (see below), whose sum is σ = 448316060080. Its totient is φ = 192135454272.

The previous prime is 312220113223. The next prime is 312220113311. The reversal of 312220113231 is 132311022213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 312220113231 - 2³ = 312220113223 is a prime.

It is a super-2 number, since 2×312220113231² (a number of 24 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 = 312220113198 and 312220113207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312220113031) 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 in 7 ways as a sum of consecutive naturals, for example, 4002821926 + ... + 4002822003.

It is an arithmetic number, because the mean of its divisors is an integer number (56039507510).

Almost surely, 2^312220113231 is an apocalyptic number.

312220113231 is a deficient number, since it is larger than the sum of its proper divisors (136095946849).

312220113231 is a wasteful number, since it uses less digits than its factorization.

312220113231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8005643945.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 312220113231 its reverse (132311022213), we get a palindrome (444531135444).

The spelling of 312220113231 in words is "three hundred twelve billion, two hundred twenty million, one hundred thirteen thousand, two hundred thirty-one".