491271307 has 8 divisors (see below), whose sum is σ = 513963072. Its totient is φ = 469089600.

The previous prime is 491271301. The next prime is 491271323. The reversal of 491271307 is 703172194.

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 491271307 - 2³ = 491271299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (491271301) 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, 125544 + ... + 129397.

It is an arithmetic number, because the mean of its divisors is an integer number (64245384).

Almost surely, 2^491271307 is an apocalyptic number.

491271307 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

491271307 is a deficient number, since it is larger than the sum of its proper divisors (22691765).

491271307 is a wasteful number, since it uses less digits than its factorization.

491271307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255029.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 491271307 is about 22164.6409174613. The cubic root of 491271307 is about 789.0547402723.

The spelling of 491271307 in words is "four hundred ninety-one million, two hundred seventy-one thousand, three hundred seven".