20053523320531 has 4 divisors (see below), whose sum is σ = 20542633645464. Its totient is φ = 19564412995600.

The previous prime is 20053523320529. The next prime is 20053523320541. The reversal of 20053523320531 is 13502332535002.

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 20053523320531 - 2¹ = 20053523320529 is a prime.

It is a super-2 number, since 2×20053523320531² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20053523320511) 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, 244555162405 + ... + 244555162486.

It is an arithmetic number, because the mean of its divisors is an integer number (5135658411366).

Almost surely, 2^{20053523320531} is an apocalyptic number.

20053523320531 is a deficient number, since it is larger than the sum of its proper divisors (489110324933).

20053523320531 is an equidigital number, since it uses as much as digits as its factorization.

20053523320531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489110324932.

The product of its (nonzero) digits is 81000, while the sum is 34.

Adding to 20053523320531 its reverse (13502332535002), we get a palindrome (33555855855533).

The spelling of 20053523320531 in words is "twenty trillion, fifty-three billion, five hundred twenty-three million, three hundred twenty thousand, five hundred thirty-one".