20431314133 has 4 divisors (see below), whose sum is σ = 20431950208. Its totient is φ = 20430678060.

The previous prime is 20431314107. The next prime is 20431314149. The reversal of 20431314133 is 33141313402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20431314133 - 2³³ = 11841379541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20431314098 and 20431314107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20431314173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267141 + ... + 335002.

It is an arithmetic number, because the mean of its divisors is an integer number (5107987552).

Almost surely, 2^20431314133 is an apocalyptic number.

It is an amenable number.

20431314133 is a deficient number, since it is larger than the sum of its proper divisors (636075).

20431314133 is an equidigital number, since it uses as much as digits as its factorization.

20431314133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636074.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 20431314133 its reverse (33141313402), we get a palindrome (53572627535).

The spelling of 20431314133 in words is "twenty billion, four hundred thirty-one million, three hundred fourteen thousand, one hundred thirty-three".