312313729 has 8 divisors (see below), whose sum is σ = 384386240. Its totient is φ = 247105296.

The previous prime is 312313723. The next prime is 312313763. The reversal of 312313729 is 927313213.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 312313729 - 2¹⁹ = 311789441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 312313729.

It is not an unprimeable number, because it can be changed into a prime (312313723) 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 7 ways as a sum of consecutive naturals, for example, 1715919 + ... + 1716100.

It is an arithmetic number, because the mean of its divisors is an integer number (48048280).

Almost surely, 2^312313729 is an apocalyptic number.

It is an amenable number.

312313729 is a deficient number, since it is larger than the sum of its proper divisors (72072511).

312313729 is a wasteful number, since it uses less digits than its factorization.

312313729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3432039.

The product of its digits is 6804, while the sum is 31.

The square root of 312313729 is about 17672.4002048392. The cubic root of 312313729 is about 678.4695460747.

The spelling of 312313729 in words is "three hundred twelve million, three hundred thirteen thousand, seven hundred twenty-nine".