312212023321 has 16 divisors (see below), whose sum is σ = 352375676928. Its totient is φ = 274053171600.

The previous prime is 312212023313. The next prime is 312212023337. The reversal of 312212023321 is 123320212213.

It is a cyclic number.

It is not a de Polignac number, because 312212023321 - 2³ = 312212023313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 312212023292 and 312212023301.

It is not an unprimeable number, because it can be changed into a prime (312212023021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 882321 + ... + 1184446.

It is an arithmetic number, because the mean of its divisors is an integer number (22023479808).

Almost surely, 2^312212023321 is an apocalyptic number.

312212023321 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

312212023321 is a deficient number, since it is larger than the sum of its proper divisors (40163653607).

312212023321 is a wasteful number, since it uses less digits than its factorization.

312212023321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2067252.

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

Adding to 312212023321 its reverse (123320212213), we get a palindrome (435532235534).

The spelling of 312212023321 in words is "three hundred twelve billion, two hundred twelve million, twenty-three thousand, three hundred twenty-one".