312223442 has 8 divisors (see below), whose sum is σ = 468425100. Its totient is φ = 156081744.

The previous prime is 312223399. The next prime is 312223493. The reversal of 312223442 is 244322213.

It can be written as a sum of positive squares in 2 ways, for example, as 311840281 + 383161 = 17659^2 + 619^2 .

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

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 in 3 ways as a sum of consecutive naturals, for example, 1784 + ... + 25052.

Almost surely, 2^312223442 is an apocalyptic number.

312223442 is a deficient number, since it is larger than the sum of its proper divisors (156201658).

312223442 is a wasteful number, since it uses less digits than its factorization.

312223442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29980.

The product of its digits is 2304, while the sum is 23.

The square root of 312223442 is about 17669.8455567670. The cubic root of 312223442 is about 678.4041600241.

Adding to 312223442 its reverse (244322213), we get a palindrome (556545655).

The spelling of 312223442 in words is "three hundred twelve million, two hundred twenty-three thousand, four hundred forty-two".