20024143223531 has 2 divisors, whose sum is σ = 20024143223532. Its totient is φ = 20024143223530.

The previous prime is 20024143223521. The next prime is 20024143223563. The reversal of 20024143223531 is 13532234142002.

It is an a-pointer prime, because the next prime (20024143223563) can be obtained adding 20024143223531 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20024143223531 - 2²⁶ = 20024076114667 is a prime.

It is a super-2 number, since 2×20024143223531² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20024143223521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10012071611765 + 10012071611766.

It is an arithmetic number, because the mean of its divisors is an integer number (10012071611766).

Almost surely, 2^{20024143223531} is an apocalyptic number.

20024143223531 is a deficient number, since it is larger than the sum of its proper divisors (1).

20024143223531 is an equidigital number, since it uses as much as digits as its factorization.

20024143223531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 32.

Adding to 20024143223531 its reverse (13532234142002), we get a palindrome (33556377365533).

The spelling of 20024143223531 in words is "twenty trillion, twenty-four billion, one hundred forty-three million, two hundred twenty-three thousand, five hundred thirty-one".