312212213 has 8 divisors (see below), whose sum is σ = 317929056. Its totient is φ = 306514800.

The previous prime is 312212183. The next prime is 312212221.

312212213 is nontrivially palindromic in base 10.

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 312212213 - 2¹⁶ = 312146677 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312212191 and 312212200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312212233) 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, 29798 + ... + 38888.

It is an arithmetic number, because the mean of its divisors is an integer number (39741132).

Almost surely, 2^312212213 is an apocalyptic number.

It is an amenable number.

312212213 is a deficient number, since it is larger than the sum of its proper divisors (5716843).

312212213 is an equidigital number, since it uses as much as digits as its factorization.

312212213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9715.

The product of its digits is 144, while the sum is 17.

The square root of 312212213 is about 17669.5278091974. The cubic root of 312212213 is about 678.3960270755.

The spelling of 312212213 in words is "three hundred twelve million, two hundred twelve thousand, two hundred thirteen".