312213322 has 8 divisors (see below), whose sum is σ = 469260000. Its totient is φ = 155793324.

The previous prime is 312213299. The next prime is 312213323. The reversal of 312213322 is 223312213.

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

It is a self number, because there is not a number n which added to its sum of digits gives 312213322.

It is not an unprimeable number, because it can be changed into a prime (312213323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155422 + ... + 157417.

It is an arithmetic number, because the mean of its divisors is an integer number (58657500).

Almost surely, 2^312213322 is an apocalyptic number.

312213322 is a deficient number, since it is larger than the sum of its proper divisors (157046678).

312213322 is a wasteful number, since it uses less digits than its factorization.

312213322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313340.

The product of its digits is 432, while the sum is 19.

The square root of 312213322 is about 17669.5591908797. The cubic root of 312213322 is about 678.3968303115.

Adding to 312213322 its reverse (223312213), we get a palindrome (535525535).

It can be divided in two parts, 31221 and 3322, that added together give a palindrome (34543).

The spelling of 312213322 in words is "three hundred twelve million, two hundred thirteen thousand, three hundred twenty-two".