531221213545241 has 8 divisors (see below), whose sum is σ = 554321913485184. Its totient is φ = 508120857391840.

The previous prime is 531221213545189. The next prime is 531221213545301. The reversal of 531221213545241 is 142545312122135.

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 531221213545241 - 2⁶ = 531221213545177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531221213541241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82786556 + ... + 88972221.

It is an arithmetic number, because the mean of its divisors is an integer number (69290239185648).

Almost surely, 2^{531221213545241} is an apocalyptic number.

It is an amenable number.

531221213545241 is a deficient number, since it is larger than the sum of its proper divisors (23100699939943).

531221213545241 is a wasteful number, since it uses less digits than its factorization.

531221213545241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171893271.

The product of its digits is 288000, while the sum is 41.

Adding to 531221213545241 its reverse (142545312122135), we get a palindrome (673766525667376).

The spelling of 531221213545241 in words is "five hundred thirty-one trillion, two hundred twenty-one billion, two hundred thirteen million, five hundred forty-five thousand, two hundred forty-one".