20631201 has 8 divisors (see below), whose sum is σ = 27752160. Its totient is φ = 13632192.

The previous prime is 20631173. The next prime is 20631203. The reversal of 20631201 is 10213602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20631201 - 2⁶ = 20631137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20631203) 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 7 ways as a sum of consecutive naturals, for example, 30091 + ... + 30768.

It is an arithmetic number, because the mean of its divisors is an integer number (3469020).

Almost surely, 2^20631201 is an apocalyptic number.

It is an amenable number.

20631201 is a deficient number, since it is larger than the sum of its proper divisors (7120959).

20631201 is a wasteful number, since it uses less digits than its factorization.

20631201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60975.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 20631201 is about 4542.1581874699. The cubic root of 20631201 is about 274.2678087347.

Adding to 20631201 its reverse (10213602), we get a palindrome (30844803).

The spelling of 20631201 in words is "twenty million, six hundred thirty-one thousand, two hundred one".