813670331 has 8 divisors (see below), whose sum is σ = 829968384. Its totient is φ = 797527080.

The previous prime is 813670327. The next prime is 813670343. The reversal of 813670331 is 133076318.

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

It is not a de Polignac number, because 813670331 - 2² = 813670327 is a prime.

It is a super-2 number, since 2×813670331² = 1324118815099299122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (813670391) 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, 28055 + ... + 49136.

It is an arithmetic number, because the mean of its divisors is an integer number (103746048).

Almost surely, 2^813670331 is an apocalyptic number.

813670331 is a deficient number, since it is larger than the sum of its proper divisors (16298053).

813670331 is a wasteful number, since it uses less digits than its factorization.

813670331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77401.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 813670331 is about 28524.9072040559. The cubic root of 813670331 is about 933.5756023148.

The spelling of 813670331 in words is "eight hundred thirteen million, six hundred seventy thousand, three hundred thirty-one".