20133120431 has 2 divisors, whose sum is σ = 20133120432. Its totient is φ = 20133120430.

The previous prime is 20133120421. The next prime is 20133120433. The reversal of 20133120431 is 13402133102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20133120431 - 2⁶ = 20133120367 is a prime.

It is a super-2 number, since 2×20133120431² (a number of 21 digits) contains 22 as substring.

Together with 20133120433, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20133120433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10066560215 + 10066560216.

It is an arithmetic number, because the mean of its divisors is an integer number (10066560216).

Almost surely, 2^20133120431 is an apocalyptic number.

20133120431 is a deficient number, since it is larger than the sum of its proper divisors (1).

20133120431 is an equidigital number, since it uses as much as digits as its factorization.

20133120431 is an odious number, because the sum of its binary digits is odd.

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

Adding to 20133120431 its reverse (13402133102), we get a palindrome (33535253533).

The spelling of 20133120431 in words is "twenty billion, one hundred thirty-three million, one hundred twenty thousand, four hundred thirty-one".