312404838 has 16 divisors (see below), whose sum is σ = 641696880. Its totient is φ = 101320416.

The previous prime is 312404819. The next prime is 312404839. The reversal of 312404838 is 838404213.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 312404799 and 312404808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312404839) 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 7 ways as a sum of consecutive naturals, for example, 703393 + ... + 703836.

It is an arithmetic number, because the mean of its divisors is an integer number (40106055).

Almost surely, 2^312404838 is an apocalyptic number.

312404838 is an abundant number, since it is smaller than the sum of its proper divisors (329292042).

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

312404838 is a wasteful number, since it uses less digits than its factorization.

312404838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1407271.

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 312404838 is about 17674.9777369025. The cubic root of 312404838 is about 678.5355146464.

The spelling of 312404838 in words is "three hundred twelve million, four hundred four thousand, eight hundred thirty-eight".