20411023331 has 4 divisors (see below), whose sum is σ = 21298459152. Its totient is φ = 19523587512.

The previous prime is 20411023261. The next prime is 20411023417. The reversal of 20411023331 is 13332011402.

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 20411023331 - 2³⁰ = 19337281507 is a prime.

It is a super-2 number, since 2×20411023331² (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 (20411025331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 443717876 + ... + 443717921.

It is an arithmetic number, because the mean of its divisors is an integer number (5324614788).

Almost surely, 2^20411023331 is an apocalyptic number.

20411023331 is a deficient number, since it is larger than the sum of its proper divisors (887435821).

20411023331 is an equidigital number, since it uses as much as digits as its factorization.

20411023331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887435820.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20411023331 its reverse (13332011402), we get a palindrome (33743034733).

The spelling of 20411023331 in words is "twenty billion, four hundred eleven million, twenty-three thousand, three hundred thirty-one".