813201 has 4 divisors (see below), whose sum is σ = 1084272. Its totient is φ = 542132.

The previous prime is 813199. The next prime is 813203. The reversal of 813201 is 102318.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (813199) and next prime (813203).

It is a cyclic number.

It is not a de Polignac number, because 813201 - 2¹ = 813199 is a prime.

It is a super-2 number, since 2×813201² = 1322591732802, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (813203) 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, 135531 + ... + 135536.

It is an arithmetic number, because the mean of its divisors is an integer number (271068).

2⁸¹³²⁰¹ is an apocalyptic number.

It is an amenable number.

813201 is a deficient number, since it is larger than the sum of its proper divisors (271071).

813201 is a wasteful number, since it uses less digits than its factorization.

813201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271070.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 813201 is about 901.7765798689. The cubic root of 813201 is about 93.3396070046.

Adding to 813201 its reverse (102318), we get a palindrome (915519).

The spelling of 813201 in words is "eight hundred thirteen thousand, two hundred one".