312220322031 has 4 divisors (see below), whose sum is σ = 416293762712. Its totient is φ = 208146881352.

The previous prime is 312220322027. The next prime is 312220322059. The reversal of 312220322031 is 130223022213.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 312220322031 - 2² = 312220322027 is a prime.

It is a super-2 number, since 2×312220322031² (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 = 312220321989 and 312220322007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312220322131) 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 3 ways as a sum of consecutive naturals, for example, 52036720336 + ... + 52036720341.

It is an arithmetic number, because the mean of its divisors is an integer number (104073440678).

Almost surely, 2^312220322031 is an apocalyptic number.

312220322031 is a deficient number, since it is larger than the sum of its proper divisors (104073440681).

312220322031 is a wasteful number, since it uses less digits than its factorization.

312220322031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104073440680.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 312220322031 its reverse (130223022213), we get a palindrome (442443344244).

The spelling of 312220322031 in words is "three hundred twelve billion, two hundred twenty million, three hundred twenty-two thousand, thirty-one".