20034531143423 has 4 divisors (see below), whose sum is σ = 20061208282848. Its totient is φ = 20007854004000.

The previous prime is 20034531143359. The next prime is 20034531143437. The reversal of 20034531143423 is 32434113543002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20034531143423 - 2⁶ = 20034531143359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20034531143453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13338568586 + ... + 13338570087.

It is an arithmetic number, because the mean of its divisors is an integer number (5015302070712).

Almost surely, 2^{20034531143423} is an apocalyptic number.

20034531143423 is a deficient number, since it is larger than the sum of its proper divisors (26677139425).

20034531143423 is an equidigital number, since it uses as much as digits as its factorization.

20034531143423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26677139424.

The product of its (nonzero) digits is 103680, while the sum is 35.

Adding to 20034531143423 its reverse (32434113543002), we get a palindrome (52468644686425).

The spelling of 20034531143423 in words is "twenty trillion, thirty-four billion, five hundred thirty-one million, one hundred forty-three thousand, four hundred twenty-three".