312043222 has 4 divisors (see below), whose sum is σ = 468064836. Its totient is φ = 156021610.

The previous prime is 312043201. The next prime is 312043223. The reversal of 312043222 is 222340213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 222340213 = 1009 ⋅220357.

It is a super-2 number, since 2×312043222² = 194741944792282568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 312043222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312043223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78010804 + ... + 78010807.

It is an arithmetic number, because the mean of its divisors is an integer number (117016209).

Almost surely, 2^312043222 is an apocalyptic number.

312043222 is a deficient number, since it is larger than the sum of its proper divisors (156021614).

312043222 is a wasteful number, since it uses less digits than its factorization.

312043222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156021613.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 312043222 is about 17664.7451722350. The cubic root of 312043222 is about 678.2736065885.

Adding to 312043222 its reverse (222340213), we get a palindrome (534383435).

The spelling of 312043222 in words is "three hundred twelve million, forty-three thousand, two hundred twenty-two".