8131201 has 4 divisors (see below), whose sum is σ = 8756692. Its totient is φ = 7505712.

The previous prime is 8131177. The next prime is 8131229. The reversal of 8131201 is 1021318.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 970225 + 7160976 = 985^2 + 2676^2 .

It is a cyclic number.

It is not a de Polignac number, because 8131201 - 2¹¹ = 8129153 is a prime.

It is a super-2 number, since 2×8131201² = 132232859404802, which contains 22 as substring.

It is a Duffinian number.

8131201 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8131241) 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, 312726 + ... + 312751.

It is an arithmetic number, because the mean of its divisors is an integer number (2189173).

Almost surely, 2^8131201 is an apocalyptic number.

It is an amenable number.

8131201 is a deficient number, since it is larger than the sum of its proper divisors (625491).

8131201 is a wasteful number, since it uses less digits than its factorization.

8131201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625490.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 8131201 is about 2851.5260826442. The cubic root of 8131201 is about 201.0874185557.

Adding to 8131201 its reverse (1021318), we get a palindrome (9152519).

The spelling of 8131201 in words is "eight million, one hundred thirty-one thousand, two hundred one".