312123342 has 32 divisors (see below), whose sum is σ = 645433344. Its totient is φ = 100548000.

The previous prime is 312123337. The next prime is 312123359. The reversal of 312123342 is 243321213.

It is a congruent 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, 28867 + ... + 38177.

It is an arithmetic number, because the mean of its divisors is an integer number (20169792).

Almost surely, 2^312123342 is an apocalyptic number.

312123342 is an abundant number, since it is smaller than the sum of its proper divisors (333310002).

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

312123342 is a wasteful number, since it uses less digits than its factorization.

312123342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9504.

The product of its digits is 864, while the sum is 21.

The square root of 312123342 is about 17667.0128205082. The cubic root of 312123342 is about 678.3316526402.

Adding to 312123342 its reverse (243321213), we get a palindrome (555444555).

The spelling of 312123342 in words is "three hundred twelve million, one hundred twenty-three thousand, three hundred forty-two".