20310033131 has 4 divisors (see below), whose sum is σ = 20354090064. Its totient is φ = 20265976200.

The previous prime is 20310033097. The next prime is 20310033157. The reversal of 20310033131 is 13133001302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20310033131 is a prime.

It is a super-2 number, since 2×20310033131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20310033431) 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 3 ways as a sum of consecutive naturals, for example, 22027775 + ... + 22028696.

It is an arithmetic number, because the mean of its divisors is an integer number (5088522516).

Almost surely, 2^20310033131 is an apocalyptic number.

20310033131 is a deficient number, since it is larger than the sum of its proper divisors (44056933).

20310033131 is an equidigital number, since it uses as much as digits as its factorization.

20310033131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44056932.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 20310033131 its reverse (13133001302), we get a palindrome (33443034433).

The spelling of 20310033131 in words is "twenty billion, three hundred ten million, thirty-three thousand, one hundred thirty-one".