813261227 has 4 divisors (see below), whose sum is σ = 815148576. Its totient is φ = 811373880.

The previous prime is 813261173. The next prime is 813261271. The reversal of 813261227 is 722162318.

813261227 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-813261227 is a prime.

It is a super-2 number, since 2×813261227² = 1322787646683091058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 813261193 and 813261202.

It is not an unprimeable number, because it can be changed into a prime (813261287) 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, 943028 + ... + 943889.

It is an arithmetic number, because the mean of its divisors is an integer number (203787144).

Almost surely, 2^813261227 is an apocalyptic number.

813261227 is a deficient number, since it is larger than the sum of its proper divisors (1887349).

813261227 is a wasteful number, since it uses less digits than its factorization.

813261227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1887348.

The product of its digits is 8064, while the sum is 32.

The square root of 813261227 is about 28517.7353062967. The cubic root of 813261227 is about 933.4191124251.

The spelling of 813261227 in words is "eight hundred thirteen million, two hundred sixty-one thousand, two hundred twenty-seven".