20330131231011 has 16 divisors (see below), whose sum is σ = 31298621279744. Its totient is φ = 11497452712704.

The previous prime is 20330131230989. The next prime is 20330131231049. The reversal of 20330131231011 is 11013213103302.

It is a happy number.

It is not a de Polignac number, because 20330131231011 - 2¹⁰ = 20330131229987 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (20330131231061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4990211815 + ... + 4990215888.

It is an arithmetic number, because the mean of its divisors is an integer number (1956163829984).

Almost surely, 2^{20330131231011} is an apocalyptic number.

20330131231011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20330131231011 is a deficient number, since it is larger than the sum of its proper divisors (10968490048733).

20330131231011 is an equidigital number, since it uses as much as digits as its factorization.

20330131231011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9980427810.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 20330131231011 its reverse (11013213103302), we get a palindrome (31343344334313).

The spelling of 20330131231011 in words is "twenty trillion, three hundred thirty billion, one hundred thirty-one million, two hundred thirty-one thousand, eleven".