20540313023 has 16 divisors (see below), whose sum is σ = 21242366592. Its totient is φ = 19852128000.

The previous prime is 20540313011. The next prime is 20540313037. The reversal of 20540313023 is 32031304502.

It is a cyclic number.

It is not a de Polignac number, because 20540313023 - 2¹² = 20540308927 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20540313023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20540313043) 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, 1198253 + ... + 1215273.

It is an arithmetic number, because the mean of its divisors is an integer number (1327647912).

Almost surely, 2^20540313023 is an apocalyptic number.

20540313023 is a deficient number, since it is larger than the sum of its proper divisors (702053569).

20540313023 is a wasteful number, since it uses less digits than its factorization.

20540313023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17426.

The product of its (nonzero) digits is 2160, while the sum is 23.

Adding to 20540313023 its reverse (32031304502), we get a palindrome (52571617525).

The spelling of 20540313023 in words is "twenty billion, five hundred forty million, three hundred thirteen thousand, twenty-three".