491331270 has 16 divisors (see below), whose sum is σ = 1179195120. Its totient is φ = 131021664.

The previous prime is 491331259. The next prime is 491331293. The reversal of 491331270 is 72133194.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 16377709 = 491331270 / (4 + 9 + 1 + 3 + 3 + 1 + 2 + 7 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8188825 + ... + 8188884.

It is an arithmetic number, because the mean of its divisors is an integer number (73699695).

Almost surely, 2^491331270 is an apocalyptic number.

491331270 is an abundant number, since it is smaller than the sum of its proper divisors (687863850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

491331270 is a wasteful number, since it uses less digits than its factorization.

491331270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16377719.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 491331270 is about 22165.9935486772. The cubic root of 491331270 is about 789.0868421298.

It can be divided in two parts, 49133 and 1270, that added together give a triangular number (50403 = T₃₁₇).

The spelling of 491331270 in words is "four hundred ninety-one million, three hundred thirty-one thousand, two hundred seventy".