811317147 has 16 divisors (see below), whose sum is σ = 1095916320. Its totient is φ = 533820672.

The previous prime is 811317139. The next prime is 811317161. The reversal of 811317147 is 741713118.

It is not a de Polignac number, because 811317147 - 2³ = 811317139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (811317047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161193 + ... + 166149.

It is an arithmetic number, because the mean of its divisors is an integer number (68494770).

Almost surely, 2^811317147 is an apocalyptic number.

811317147 is a deficient number, since it is larger than the sum of its proper divisors (284599173).

811317147 is a wasteful number, since it uses less digits than its factorization.

811317147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5662.

The product of its digits is 4704, while the sum is 33.

The square root of 811317147 is about 28483.6294562333. The cubic root of 811317147 is about 932.6747475387.

The spelling of 811317147 in words is "eight hundred eleven million, three hundred seventeen thousand, one hundred forty-seven".