312240122 has 16 divisors (see below), whose sum is σ = 511909632. Its totient is φ = 142196160.

The previous prime is 312240113. The next prime is 312240143. The reversal of 312240122 is 221042213.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 312240122.

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 7 ways as a sum of consecutive naturals, for example, 147068 + ... + 149175.

It is an arithmetic number, because the mean of its divisors is an integer number (31994352).

Almost surely, 2^312240122 is an apocalyptic number.

312240122 is a deficient number, since it is larger than the sum of its proper divisors (199669510).

312240122 is a wasteful number, since it uses less digits than its factorization.

312240122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296293.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 312240122 is about 17670.3175410064. The cubic root of 312240122 is about 678.4162406672.

Adding to 312240122 its reverse (221042213), we get a palindrome (533282335).

The spelling of 312240122 in words is "three hundred twelve million, two hundred forty thousand, one hundred twenty-two".