20312241 has 8 divisors (see below), whose sum is σ = 27200160. Its totient is φ = 13482912.

The previous prime is 20312239. The next prime is 20312249. The reversal of 20312241 is 14221302.

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

It is not a de Polignac number, because 20312241 - 2¹ = 20312239 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20312241.

It is not an unprimeable number, because it can be changed into a prime (20312249) 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, 13831 + ... + 15228.

It is an arithmetic number, because the mean of its divisors is an integer number (3400020).

Almost surely, 2^20312241 is an apocalyptic number.

It is an amenable number.

20312241 is a deficient number, since it is larger than the sum of its proper divisors (6887919).

20312241 is a wasteful number, since it uses less digits than its factorization.

20312241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29295.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 20312241 is about 4506.9103607682. The cubic root of 20312241 is about 272.8470610854.

Adding to 20312241 its reverse (14221302), we get a palindrome (34533543).

The spelling of 20312241 in words is "twenty million, three hundred twelve thousand, two hundred forty-one".