531325134221 has 8 divisors (see below), whose sum is σ = 607234213824. Its totient is φ = 455417426880.

The previous prime is 531325134127. The next prime is 531325134233. The reversal of 531325134221 is 122431523135.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-531325134221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531325134721) 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, 696746 + ... + 1244228.

It is an arithmetic number, because the mean of its divisors is an integer number (75904276728).

Almost surely, 2^531325134221 is an apocalyptic number.

It is an amenable number.

531325134221 is a deficient number, since it is larger than the sum of its proper divisors (75909079603).

531325134221 is a wasteful number, since it uses less digits than its factorization.

531325134221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686131.

The product of its digits is 21600, while the sum is 32.

Adding to 531325134221 its reverse (122431523135), we get a palindrome (653756657356).

The spelling of 531325134221 in words is "five hundred thirty-one billion, three hundred twenty-five million, one hundred thirty-four thousand, two hundred twenty-one".