813313730 has 8 divisors (see below), whose sum is σ = 1463964732. Its totient is φ = 325325488.

The previous prime is 813313727. The next prime is 813313747. The reversal of 813313730 is 37313318.

It can be written as a sum of positive squares in 2 ways, for example, as 777684769 + 35628961 = 27887^2 + 5969^2 .

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

It is a super-2 number, since 2×813313730² = 1322958446813025800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 813313693 and 813313702.

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, 40665677 + ... + 40665696.

Almost surely, 2^813313730 is an apocalyptic number.

813313730 is a deficient number, since it is larger than the sum of its proper divisors (650651002).

813313730 is a wasteful number, since it uses less digits than its factorization.

813313730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81331380.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 813313730 is about 28518.6558238638. The cubic root of 813313730 is about 933.4391987342.

The spelling of 813313730 in words is "eight hundred thirteen million, three hundred thirteen thousand, seven hundred thirty".