13205304245531 has 8 divisors (see below), whose sum is σ = 13231678829424. Its totient is φ = 13178933958240.

The previous prime is 13205304245503. The next prime is 13205304245557. The reversal of 13205304245531 is 13554240350231.

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 13205304245531 - 2⁶ = 13205304245467 is a prime.

It is a super-2 number, since 2×13205304245531² (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 (13205304245501) 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, 5114405 + ... + 7250361.

It is an arithmetic number, because the mean of its divisors is an integer number (1653959853678).

Almost surely, 2^{13205304245531} is an apocalyptic number.

13205304245531 is a deficient number, since it is larger than the sum of its proper divisors (26374583893).

13205304245531 is a wasteful number, since it uses less digits than its factorization.

13205304245531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2148301.

The product of its (nonzero) digits is 216000, while the sum is 38.

Adding to 13205304245531 its reverse (13554240350231), we get a palindrome (26759544595762).

The spelling of 13205304245531 in words is "thirteen trillion, two hundred five billion, three hundred four million, two hundred forty-five thousand, five hundred thirty-one".