20431411133 has 16 divisors (see below), whose sum is σ = 23425822080. Its totient is φ = 17456006976.

The previous prime is 20431411127. The next prime is 20431411163. The reversal of 20431411133 is 33111413402.

It is a cyclic number.

It is not a de Polignac number, because 20431411133 - 2¹² = 20431407037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20431411099 and 20431411108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20431411163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3010538 + ... + 3017316.

It is an arithmetic number, because the mean of its divisors is an integer number (1464113880).

Almost surely, 2^20431411133 is an apocalyptic number.

It is an amenable number.

20431411133 is a deficient number, since it is larger than the sum of its proper divisors (2994410947).

20431411133 is an equidigital number, since it uses as much as digits as its factorization.

20431411133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8116.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 20431411133 its reverse (33111413402), we get a palindrome (53542824535).

The spelling of 20431411133 in words is "twenty billion, four hundred thirty-one million, four hundred eleven thousand, one hundred thirty-three".