312312320221 has 8 divisors (see below), whose sum is σ = 340760857824. Its totient is φ = 283873200720.

The previous prime is 312312320209. The next prime is 312312320261. The reversal of 312312320221 is 122023213213.

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

It is a cyclic number.

It is not a de Polignac number, because 312312320221 - 2¹⁹ = 312311795933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312312320192 and 312312320201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312312320261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2285095 + ... + 2417908.

It is an arithmetic number, because the mean of its divisors is an integer number (42595107228).

Almost surely, 2^312312320221 is an apocalyptic number.

It is an amenable number.

312312320221 is a deficient number, since it is larger than the sum of its proper divisors (28448537603).

312312320221 is a wasteful number, since it uses less digits than its factorization.

312312320221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4709051.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 312312320221 its reverse (122023213213), we get a palindrome (434335533434).

The spelling of 312312320221 in words is "three hundred twelve billion, three hundred twelve million, three hundred twenty thousand, two hundred twenty-one".