312639342 has 16 divisors (see below), whose sum is σ = 631726032. Its totient is φ = 103138560.

The previous prime is 312639331. The next prime is 312639373. The reversal of 312639342 is 243936213.

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 7 ways as a sum of consecutive naturals, for example, 268009 + ... + 269172.

It is an arithmetic number, because the mean of its divisors is an integer number (39482877).

Almost surely, 2^312639342 is an apocalyptic number.

312639342 is an abundant number, since it is smaller than the sum of its proper divisors (319086690).

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

312639342 is a wasteful number, since it uses less digits than its factorization.

312639342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537283.

The product of its digits is 23328, while the sum is 33.

The square root of 312639342 is about 17681.6102773475. The cubic root of 312639342 is about 678.7052511291.

The spelling of 312639342 in words is "three hundred twelve million, six hundred thirty-nine thousand, three hundred forty-two".