312729938 has 8 divisors (see below), whose sum is σ = 473398860. Its totient is φ = 154930320.

The previous prime is 312729931. The next prime is 312729947. The reversal of 312729938 is 839927213.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 308248249 + 4481689 = 17557^2 + 2117^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (312729931) 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 3 ways as a sum of consecutive naturals, for example, 717053 + ... + 717488.

Almost surely, 2^312729938 is an apocalyptic number.

312729938 is a deficient number, since it is larger than the sum of its proper divisors (160668922).

312729938 is a wasteful number, since it uses less digits than its factorization.

312729938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1434652.

The product of its digits is 163296, while the sum is 44.

The square root of 312729938 is about 17684.1719625206. The cubic root of 312729938 is about 678.7708027454.

The spelling of 312729938 in words is "three hundred twelve million, seven hundred twenty-nine thousand, nine hundred thirty-eight".