20330131 has 8 divisors (see below), whose sum is σ = 21600720. Its totient is φ = 19097568.

The previous prime is 20330129. The next prime is 20330143. The reversal of 20330131 is 13103302.

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

It is a cyclic number.

It is not a de Polignac number, because 20330131 - 2¹ = 20330129 is a prime.

It is a super-3 number, since 3×20330131³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20330731) 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, 8401 + ... + 10546.

It is an arithmetic number, because the mean of its divisors is an integer number (2700090).

Almost surely, 2^20330131 is an apocalyptic number.

20330131 is a deficient number, since it is larger than the sum of its proper divisors (1270589).

20330131 is a wasteful number, since it uses less digits than its factorization.

20330131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19013.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 20330131 is about 4508.8946539035. The cubic root of 20330131 is about 272.9271409016.

Adding to 20330131 its reverse (13103302), we get a palindrome (33433433).

The spelling of 20330131 in words is "twenty million, three hundred thirty thousand, one hundred thirty-one".