312797 has 8 divisors (see below), whose sum is σ = 334560. Its totient is φ = 291600.

The previous prime is 312779. The next prime is 312799. The reversal of 312797 is 797213.

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 312797 - 2¹² = 308701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 312797.

It is not an unprimeable number, because it can be changed into a prime (312799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1838 + ... + 2000.

It is an arithmetic number, because the mean of its divisors is an integer number (41820).

2³¹²⁷⁹⁷ is an apocalyptic number.

It is an amenable number.

312797 is a deficient number, since it is larger than the sum of its proper divisors (21763).

312797 is a wasteful number, since it uses less digits than its factorization.

312797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283.

The product of its digits is 2646, while the sum is 29.

The square root of 312797 is about 559.2825761634. The cubic root of 312797 is about 67.8819317954.

Subtracting 312797 from its reverse (797213), we obtain a square (484416 = 696²).

The spelling of 312797 in words is "three hundred twelve thousand, seven hundred ninety-seven".