813285703 has 4 divisors (see below), whose sum is σ = 832199368. Its totient is φ = 794372040.

The previous prime is 813285701. The next prime is 813285719. The reversal of 813285703 is 307582318.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 307582318 = 2 ⋅153791159.

It is a cyclic number.

It is not a de Polignac number, because 813285703 - 2¹ = 813285701 is a prime.

It is a super-2 number, since 2×813285703² = 1322867269408408418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813285701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9456768 + ... + 9456853.

It is an arithmetic number, because the mean of its divisors is an integer number (208049842).

Almost surely, 2^813285703 is an apocalyptic number.

813285703 is a deficient number, since it is larger than the sum of its proper divisors (18913665).

813285703 is a wasteful number, since it uses less digits than its factorization.

813285703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18913664.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 813285703 is about 28518.1644395287. The cubic root of 813285703 is about 933.4284764262.

The spelling of 813285703 in words is "eight hundred thirteen million, two hundred eighty-five thousand, seven hundred three".