813270831 has 8 divisors (see below), whose sum is σ = 1093957680. Its totient is φ = 537382272.

The previous prime is 813270827. The next prime is 813270839. The reversal of 813270831 is 138072318.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 813270831 - 2² = 813270827 is a prime.

It is a super-2 number, since 2×813270831² = 1322818889110861122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 813270792 and 813270801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813270839) 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, 1199176 + ... + 1199853.

It is an arithmetic number, because the mean of its divisors is an integer number (136744710).

Almost surely, 2^813270831 is an apocalyptic number.

813270831 is a deficient number, since it is larger than the sum of its proper divisors (280686849).

813270831 is a wasteful number, since it uses less digits than its factorization.

813270831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2399145.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 813270831 is about 28517.9036922422. The cubic root of 813270831 is about 933.4227867352.

The spelling of 813270831 in words is "eight hundred thirteen million, two hundred seventy thousand, eight hundred thirty-one".