312404442 has 32 divisors (see below), whose sum is σ = 714854400. Its totient is φ = 89160048.

The previous prime is 312404401. The next prime is 312404471. The reversal of 312404442 is 244404213.

It is a happy number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 40059 + ... + 47217.

It is an arithmetic number, because the mean of its divisors is an integer number (22339200).

Almost surely, 2^312404442 is an apocalyptic number.

312404442 is an abundant number, since it is smaller than the sum of its proper divisors (402449958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

312404442 is a wasteful number, since it uses less digits than its factorization.

312404442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8210.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 312404442 is about 17674.9665346218. The cubic root of 312404442 is about 678.5352279456.

Adding to 312404442 its reverse (244404213), we get a palindrome (556808655).

The spelling of 312404442 in words is "three hundred twelve million, four hundred four thousand, four hundred forty-two".