20330131031123 has 4 divisors (see below), whose sum is σ = 20330247535608. Its totient is φ = 20330014526640.

The previous prime is 20330131031099. The next prime is 20330131031143. The reversal of 20330131031123 is 32113013103302.

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

It is a cyclic number.

It is not a de Polignac number, because 20330131031123 - 2¹² = 20330131027027 is a prime.

It is a super-2 number, since 2×20330131031123² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20330131031143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57990098 + ... + 58339623.

It is an arithmetic number, because the mean of its divisors is an integer number (5082561883902).

Almost surely, 2^{20330131031123} is an apocalyptic number.

20330131031123 is a deficient number, since it is larger than the sum of its proper divisors (116504485).

20330131031123 is a wasteful number, since it uses less digits than its factorization.

20330131031123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116504484.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 20330131031123 its reverse (32113013103302), we get a palindrome (52443144134425).

The spelling of 20330131031123 in words is "twenty trillion, three hundred thirty billion, one hundred thirty-one million, thirty-one thousand, one hundred twenty-three".