20041023031 has 4 divisors (see below), whose sum is σ = 20042566792. Its totient is φ = 20039479272.

The previous prime is 20041023001. The next prime is 20041023089. The reversal of 20041023031 is 13032014002.

It is a happy number.

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-20041023031 is a prime.

It is a super-2 number, since 2×20041023031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20041022996 and 20041023014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20041023001) 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 3 ways as a sum of consecutive naturals, for example, 752241 + ... + 778426.

It is an arithmetic number, because the mean of its divisors is an integer number (5010641698).

Almost surely, 2^20041023031 is an apocalyptic number.

20041023031 is a deficient number, since it is larger than the sum of its proper divisors (1543761).

20041023031 is a wasteful number, since it uses less digits than its factorization.

20041023031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1543760.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20041023031 its reverse (13032014002), we get a palindrome (33073037033).

The spelling of 20041023031 in words is "twenty billion, forty-one million, twenty-three thousand, thirty-one".