20331131201 has 8 divisors (see below), whose sum is σ = 20392414824. Its totient is φ = 20269941120.

The previous prime is 20331131179. The next prime is 20331131243. The reversal of 20331131201 is 10213113302.

It can be written as a sum of positive squares in 4 ways, for example, as 18421004176 + 1910127025 = 135724^2 + 43705^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20331131201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20331131201.

It is not an unprimeable number, because it can be changed into a prime (20331131101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 424781 + ... + 470213.

It is an arithmetic number, because the mean of its divisors is an integer number (2549051853).

Almost surely, 2^20331131201 is an apocalyptic number.

It is an amenable number.

20331131201 is a deficient number, since it is larger than the sum of its proper divisors (61283623).

20331131201 is an equidigital number, since it uses as much as digits as its factorization.

20331131201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46771.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 20331131201 its reverse (10213113302), we get a palindrome (30544244503).

The spelling of 20331131201 in words is "twenty billion, three hundred thirty-one million, one hundred thirty-one thousand, two hundred one".