20315304543241 has 8 divisors (see below), whose sum is σ = 20517467473800. Its totient is φ = 20113161638400.

The previous prime is 20315304543227. The next prime is 20315304543257. The reversal of 20315304543241 is 14234540351302.

It can be written as a sum of positive squares in 4 ways, for example, as 6488248217616 + 13827056325625 = 2547204^2 + 3718475^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 20315304543241 - 2³¹ = 20313157059593 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 20315304543241.

It is not an unprimeable number, because it can be changed into a prime (20315304543211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2963286 + ... + 7029343.

It is an arithmetic number, because the mean of its divisors is an integer number (2564683434225).

Almost surely, 2^{20315304543241} is an apocalyptic number.

It is an amenable number.

20315304543241 is a deficient number, since it is larger than the sum of its proper divisors (202162930559).

20315304543241 is a wasteful number, since it uses less digits than its factorization.

20315304543241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10012859.

The product of its (nonzero) digits is 172800, while the sum is 37.

Adding to 20315304543241 its reverse (14234540351302), we get a palindrome (34549844894543).

The spelling of 20315304543241 in words is "twenty trillion, three hundred fifteen billion, three hundred four million, five hundred forty-three thousand, two hundred forty-one".