813271332 has 12 divisors (see below), whose sum is σ = 1897633136. Its totient is φ = 271090440.

The previous prime is 813271321. The next prime is 813271373. The reversal of 813271332 is 233172318.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×813271332² = 1322820518906108448, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 813271332.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33886294 + ... + 33886317.

Almost surely, 2^813271332 is an apocalyptic number.

It is an amenable number.

813271332 is an abundant number, since it is smaller than the sum of its proper divisors (1084361804).

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

813271332 is a wasteful number, since it uses less digits than its factorization.

813271332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67772618 (or 67772616 counting only the distinct ones).

The product of its digits is 6048, while the sum is 30.

The square root of 813271332 is about 28517.9124761964. The cubic root of 813271332 is about 933.4229784076.

The spelling of 813271332 in words is "eight hundred thirteen million, two hundred seventy-one thousand, three hundred thirty-two".