312773285721 has 8 divisors (see below), whose sum is σ = 449110359040. Its totient is φ = 192475868112.

The previous prime is 312773285659. The next prime is 312773285723. The reversal of 312773285721 is 127582377213.

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

It is not a de Polignac number, because 312773285721 - 2¹¹ = 312773283673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312773285723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4009913881 + ... + 4009913958.

It is an arithmetic number, because the mean of its divisors is an integer number (56138794880).

Almost surely, 2^312773285721 is an apocalyptic number.

It is an amenable number.

312773285721 is a deficient number, since it is larger than the sum of its proper divisors (136337073319).

312773285721 is a wasteful number, since it uses less digits than its factorization.

312773285721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8019827855.

The product of its digits is 987840, while the sum is 48.

The spelling of 312773285721 in words is "three hundred twelve billion, seven hundred seventy-three million, two hundred eighty-five thousand, seven hundred twenty-one".