812304502271 has 4 divisors (see below), whose sum is σ = 838507873344. Its totient is φ = 786101131200.

The previous prime is 812304502259. The next prime is 812304502283. The reversal of 812304502271 is 172205403218.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (812304502259) and next prime (812304502283).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-812304502271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812304502201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13101685490 + ... + 13101685551.

It is an arithmetic number, because the mean of its divisors is an integer number (209626968336).

Almost surely, 2^812304502271 is an apocalyptic number.

812304502271 is a deficient number, since it is larger than the sum of its proper divisors (26203371073).

812304502271 is a wasteful number, since it uses less digits than its factorization.

812304502271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26203371072.

The product of its (nonzero) digits is 26880, while the sum is 35.

Adding to 812304502271 its reverse (172205403218), we get a palindrome (984509905489).

The spelling of 812304502271 in words is "eight hundred twelve billion, three hundred four million, five hundred two thousand, two hundred seventy-one".