20431534514234 has 8 divisors (see below), whose sum is σ = 30683230615380. Its totient is φ = 10203790975776.

The previous prime is 20431534514231. The next prime is 20431534514273. The reversal of 20431534514234 is 43241543513402.

It can be written as a sum of positive squares in 2 ways, for example, as 20287592430625 + 143942083609 = 4504175^2 + 379397^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20431534514191 and 20431534514200.

It is not an unprimeable number, because it can be changed into a prime (20431534514231) 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, 5988138539 + ... + 5988141950.

Almost surely, 2^{20431534514234} is an apocalyptic number.

20431534514234 is a deficient number, since it is larger than the sum of its proper divisors (10251696101146).

20431534514234 is a wasteful number, since it uses less digits than its factorization.

20431534514234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11976281344.

The product of its (nonzero) digits is 691200, while the sum is 41.

The spelling of 20431534514234 in words is "twenty trillion, four hundred thirty-one billion, five hundred thirty-four million, five hundred fourteen thousand, two hundred thirty-four".