20143104431 has 2 divisors, whose sum is σ = 20143104432. Its totient is φ = 20143104430.

The previous prime is 20143104419. The next prime is 20143104433. The reversal of 20143104431 is 13440134102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20143104431 is a prime.

It is a super-2 number, since 2×20143104431² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 20143104433, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20143104397 and 20143104406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20143104433) 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 as a sum of consecutive naturals, namely, 10071552215 + 10071552216.

It is an arithmetic number, because the mean of its divisors is an integer number (10071552216).

Almost surely, 2^20143104431 is an apocalyptic number.

20143104431 is a deficient number, since it is larger than the sum of its proper divisors (1).

20143104431 is an equidigital number, since it uses as much as digits as its factorization.

20143104431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 20143104431 its reverse (13440134102), we get a palindrome (33583238533).

The spelling of 20143104431 in words is "twenty billion, one hundred forty-three million, one hundred four thousand, four hundred thirty-one".