312122223 has 12 divisors (see below), whose sum is σ = 515249488. Its totient is φ = 178355520.

The previous prime is 312122221. The next prime is 312122287. The reversal of 312122223 is 322221213.

It is not a de Polignac number, because 312122223 - 2¹ = 312122221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312122196 and 312122205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312122221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2477098 + ... + 2477223.

Almost surely, 2^312122223 is an apocalyptic number.

312122223 is a deficient number, since it is larger than the sum of its proper divisors (203127265).

312122223 is a wasteful number, since it uses less digits than its factorization.

312122223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4954334 (or 4954331 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 312122223 is about 17666.9811512890. The cubic root of 312122223 is about 678.3308420055.

Adding to 312122223 its reverse (322221213), we get a palindrome (634343436).

The spelling of 312122223 in words is "three hundred twelve million, one hundred twenty-two thousand, two hundred twenty-three".