20431534514236 has 48 divisors (see below), whose sum is σ = 36654330480768. Its totient is φ = 9961314854400.

The previous prime is 20431534514231. The next prime is 20431534514273. The reversal of 20431534514236 is 63241543513402.

It is a junction number, because it is equal to n+sod(n) for n = 20431534514192 and 20431534514201.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 60574696 + ... + 60911056.

It is an arithmetic number, because the mean of its divisors is an integer number (763631885016).

Almost surely, 2^{20431534514236} is an apocalyptic number.

It is an amenable number.

20431534514236 is a deficient number, since it is larger than the sum of its proper divisors (16222795966532).

20431534514236 is a wasteful number, since it uses less digits than its factorization.

20431534514236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338182 (or 338180 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 43.

The spelling of 20431534514236 in words is "twenty trillion, four hundred thirty-one billion, five hundred thirty-four million, five hundred fourteen thousand, two hundred thirty-six".