813103601 has 4 divisors (see below), whose sum is σ = 835079412. Its totient is φ = 791127792.

The previous prime is 813103597. The next prime is 813103637. The reversal of 813103601 is 106301318.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 106301318 = 2 ⋅53150659.

It can be written as a sum of positive squares in 2 ways, for example, as 484044001 + 329059600 = 22001^2 + 18140^2 .

It is a cyclic number.

It is not a de Polignac number, because 813103601 - 2² = 813103597 is a prime.

It is a super-2 number, since 2×813103601² = 1322274931918334402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (813103661) 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, 10987850 + ... + 10987923.

It is an arithmetic number, because the mean of its divisors is an integer number (208769853).

Almost surely, 2^813103601 is an apocalyptic number.

It is an amenable number.

813103601 is a deficient number, since it is larger than the sum of its proper divisors (21975811).

813103601 is a wasteful number, since it uses less digits than its factorization.

813103601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21975810.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 813103601 is about 28514.9715237452. The cubic root of 813103601 is about 933.3588035425.

Adding to 813103601 its reverse (106301318), we get a palindrome (919404919).

The spelling of 813103601 in words is "eight hundred thirteen million, one hundred three thousand, six hundred one".