312246442 has 8 divisors (see below), whose sum is σ = 468842436. Its totient is φ = 155965632.

The previous prime is 312246439. The next prime is 312246469. The reversal of 312246442 is 244642213.

It can be written as a sum of positive squares in 2 ways, for example, as 298563841 + 13682601 = 17279^2 + 3699^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 312246442.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76303 + ... + 80290.

Almost surely, 2^312246442 is an apocalyptic number.

312246442 is a deficient number, since it is larger than the sum of its proper divisors (156595994).

312246442 is a wasteful number, since it uses less digits than its factorization.

312246442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157592.

The product of its digits is 9216, while the sum is 28.

The square root of 312246442 is about 17670.4963710701. The cubic root of 312246442 is about 678.4208178728.

Adding to 312246442 its reverse (244642213), we get a palindrome (556888655).

The spelling of 312246442 in words is "three hundred twelve million, two hundred forty-six thousand, four hundred forty-two".