312223322 has 4 divisors (see below), whose sum is σ = 468334986. Its totient is φ = 156111660.

The previous prime is 312223267. The next prime is 312223337. The reversal of 312223322 is 223322213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 223322213 = 8849 ⋅25237.

It can be written as a sum of positive squares in only one way, i.e., 200477281 + 111746041 = 14159^2 + 10571^2 .

It is a junction number, because it is equal to n+sod(n) for n = 312223294 and 312223303.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78055829 + ... + 78055832.

Almost surely, 2^312223322 is an apocalyptic number.

312223322 is a deficient number, since it is larger than the sum of its proper divisors (156111664).

312223322 is a wasteful number, since it uses less digits than its factorization.

312223322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156111663.

The product of its digits is 864, while the sum is 20.

The square root of 312223322 is about 17669.8421611513. The cubic root of 312223322 is about 678.4040731115.

Adding to 312223322 its reverse (223322213), we get a palindrome (535545535).

The spelling of 312223322 in words is "three hundred twelve million, two hundred twenty-three thousand, three hundred twenty-two".