491271308 has 24 divisors (see below), whose sum is σ = 953261904. Its totient is φ = 219643200.

The previous prime is 491271301. The next prime is 491271323. The reversal of 491271308 is 803172194.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (491271301) 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, 88835 + ... + 94202.

It is an arithmetic number, because the mean of its divisors is an integer number (39719246).

Almost surely, 2^491271308 is an apocalyptic number.

It is an amenable number.

491271308 is a deficient number, since it is larger than the sum of its proper divisors (461990596).

491271308 is a wasteful number, since it uses less digits than its factorization.

491271308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183113 (or 183111 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 491271308 is about 22164.6409400198. The cubic root of 491271308 is about 789.0547408077.

It can be divided in two parts, 49127 and 1308, that multiplied together give a triangular number (64258116 = T₁₁₃₃₆).

The spelling of 491271308 in words is "four hundred ninety-one million, two hundred seventy-one thousand, three hundred eight".