20123031120043 has 2 divisors, whose sum is σ = 20123031120044. Its totient is φ = 20123031120042.

The previous prime is 20123031119977. The next prime is 20123031120047. The reversal of 20123031120043 is 34002113032102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20123031120043 - 2¹⁷ = 20123030988971 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20123031119996 and 20123031120023.

It is not a weakly prime, because it can be changed into another prime (20123031120047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10061515560021 + 10061515560022.

It is an arithmetic number, because the mean of its divisors is an integer number (10061515560022).

Almost surely, 2^{20123031120043} is an apocalyptic number.

20123031120043 is a deficient number, since it is larger than the sum of its proper divisors (1).

20123031120043 is an equidigital number, since it uses as much as digits as its factorization.

20123031120043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 20123031120043 its reverse (34002113032102), we get a palindrome (54125144152145).

The spelling of 20123031120043 in words is "twenty trillion, one hundred twenty-three billion, thirty-one million, one hundred twenty thousand, forty-three".