312717081 has 8 divisors (see below), whose sum is σ = 428225344. Its totient is φ = 202843440.

The previous prime is 312717079. The next prime is 312717089. The reversal of 312717081 is 180717213.

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

It is not a de Polignac number, because 312717081 - 2¹ = 312717079 is a prime.

It is a super-2 number, since 2×312717081² = 195583945498321122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (312717089) 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, 1408525 + ... + 1408746.

It is an arithmetic number, because the mean of its divisors is an integer number (53528168).

Almost surely, 2^312717081 is an apocalyptic number.

It is an amenable number.

312717081 is a deficient number, since it is larger than the sum of its proper divisors (115508263).

312717081 is a wasteful number, since it uses less digits than its factorization.

312717081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2817311.

The product of its (nonzero) digits is 2352, while the sum is 30.

The square root of 312717081 is about 17683.8084416225. The cubic root of 312717081 is about 678.7615007090.

The spelling of 312717081 in words is "three hundred twelve million, seven hundred seventeen thousand, eighty-one".