813032187316 has 6 divisors (see below), whose sum is σ = 1422806327810. Its totient is φ = 406516093656.

The previous prime is 813032187251. The next prime is 813032187329. The reversal of 813032187316 is 613781230318.

It can be written as a sum of positive squares in only one way, i.e., 777818163600 + 35214023716 = 881940^2 + 187654^2 .

It is a super-2 number, since 2×813032187316² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101629023411 + ... + 101629023418.

Almost surely, 2^813032187316 is an apocalyptic number.

It is an amenable number.

813032187316 is a deficient number, since it is larger than the sum of its proper divisors (609774140494).

813032187316 is a wasteful number, since it uses less digits than its factorization.

813032187316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203258046833 (or 203258046831 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The spelling of 813032187316 in words is "eight hundred thirteen billion, thirty-two million, one hundred eighty-seven thousand, three hundred sixteen".