312323222 has 4 divisors (see below), whose sum is σ = 468484836. Its totient is φ = 156161610.

The previous prime is 312323191. The next prime is 312323251. The reversal of 312323222 is 222323213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 222323213 = 7 ⋅31760459.

It is a super-2 number, since 2×312323222² = 195091590000922568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 312323194 and 312323203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78080804 + ... + 78080807.

It is an arithmetic number, because the mean of its divisors is an integer number (117121209).

Almost surely, 2^312323222 is an apocalyptic number.

312323222 is a deficient number, since it is larger than the sum of its proper divisors (156161614).

312323222 is a wasteful number, since it uses less digits than its factorization.

312323222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156161613.

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

The square root of 312323222 is about 17672.6687854438. The cubic root of 312323222 is about 678.4764201946.

Adding to 312323222 its reverse (222323213), we get a palindrome (534646435).

Subtracting from 312323222 its reverse (222323213), we obtain a palindrome (90000009).

The spelling of 312323222 in words is "three hundred twelve million, three hundred twenty-three thousand, two hundred twenty-two".