20313100043 has 2 divisors, whose sum is σ = 20313100044. Its totient is φ = 20313100042.

The previous prime is 20313100009. The next prime is 20313100061. The reversal of 20313100043 is 34000131302.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20313100043 - 2¹⁶ = 20313034507 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20313099994 and 20313100030.

It is not a weakly prime, because it can be changed into another prime (20313103043) 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 as a sum of consecutive naturals, namely, 10156550021 + 10156550022.

It is an arithmetic number, because the mean of its divisors is an integer number (10156550022).

Almost surely, 2^20313100043 is an apocalyptic number.

20313100043 is a deficient number, since it is larger than the sum of its proper divisors (1).

20313100043 is an equidigital number, since it uses as much as digits as its factorization.

20313100043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20313100043 its reverse (34000131302), we get a palindrome (54313231345).

The spelling of 20313100043 in words is "twenty billion, three hundred thirteen million, one hundred thousand, forty-three".