82631201 has 4 divisors (see below), whose sum is σ = 83109012. Its totient is φ = 82153392.

The previous prime is 82631177. The next prime is 82631221. The reversal of 82631201 is 10213628.

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 78304801 + 4326400 = 8849^2 + 2080^2 .

It is a cyclic number.

It is not a de Polignac number, because 82631201 - 2¹⁸ = 82369057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82631221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238646 + ... + 238991.

It is an arithmetic number, because the mean of its divisors is an integer number (20777253).

Almost surely, 2^82631201 is an apocalyptic number.

It is an amenable number.

82631201 is a deficient number, since it is larger than the sum of its proper divisors (477811).

82631201 is a wasteful number, since it uses less digits than its factorization.

82631201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477810.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 82631201 is about 9090.1705704569. The cubic root of 82631201 is about 435.5600326395.

Adding to 82631201 its reverse (10213628), we get a palindrome (92844829).

The spelling of 82631201 in words is "eighty-two million, six hundred thirty-one thousand, two hundred one".