813228113 has 8 divisors (see below), whose sum is σ = 819926016. Its totient is φ = 806554800.

The previous prime is 813228109. The next prime is 813228161. The reversal of 813228113 is 311822318.

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 813228113 - 2² = 813228109 is a prime.

It is a super-2 number, since 2×813228113² = 1322679927547081538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (813228413) 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, 63458 + ... + 75188.

It is an arithmetic number, because the mean of its divisors is an integer number (102490752).

Almost surely, 2^813228113 is an apocalyptic number.

It is an amenable number.

813228113 is a deficient number, since it is larger than the sum of its proper divisors (6697903).

813228113 is a wasteful number, since it uses less digits than its factorization.

813228113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12295.

The product of its digits is 2304, while the sum is 29.

The square root of 813228113 is about 28517.1547143119. The cubic root of 813228113 is about 933.4064434085.

The spelling of 813228113 in words is "eight hundred thirteen million, two hundred twenty-eight thousand, one hundred thirteen".