312225213 has 8 divisors (see below), whose sum is σ = 440788608. Its totient is φ = 195905984.

The previous prime is 312225197. The next prime is 312225257. The reversal of 312225213 is 312522213.

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 312225213 - 2⁴ = 312225197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 312225213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312225013) 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, 3060981 + ... + 3061082.

It is an arithmetic number, because the mean of its divisors is an integer number (55098576).

Almost surely, 2^312225213 is an apocalyptic number.

It is an amenable number.

312225213 is a deficient number, since it is larger than the sum of its proper divisors (128563395).

312225213 is a wasteful number, since it uses less digits than its factorization.

312225213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6122083.

The product of its digits is 720, while the sum is 21.

The square root of 312225213 is about 17669.8956703202. The cubic root of 312225213 is about 678.4054427075.

Adding to 312225213 its reverse (312522213), we get a palindrome (624747426).

The spelling of 312225213 in words is "three hundred twelve million, two hundred twenty-five thousand, two hundred thirteen".