312324138 has 48 divisors (see below), whose sum is σ = 789172800. Its totient is φ = 89233704.

The previous prime is 312324127. The next prime is 312324139. The reversal of 312324138 is 831423213.

It is not an unprimeable number, because it can be changed into a prime (312324139) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 19120 + ... + 31467.

It is an arithmetic number, because the mean of its divisors is an integer number (16441100).

Almost surely, 2^312324138 is an apocalyptic number.

312324138 is an abundant number, since it is smaller than the sum of its proper divisors (476848662).

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

312324138 is a wasteful number, since it uses less digits than its factorization.

312324138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50616 (or 50599 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 312324138 is about 17672.6947011484. The cubic root of 312324138 is about 678.4770834859.

It can be divided in two parts, 3123 and 24138, that added together give a triangular number (27261 = T₂₃₃).

The spelling of 312324138 in words is "three hundred twelve million, three hundred twenty-four thousand, one hundred thirty-eight".