531321313211 has 8 divisors (see below), whose sum is σ = 572296846464. Its totient is φ = 490360731840.

The previous prime is 531321313207. The next prime is 531321313219. The reversal of 531321313211 is 112313123135.

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 531321313211 - 2² = 531321313207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531321313219) 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, 3664106 + ... + 3806351.

It is an arithmetic number, because the mean of its divisors is an integer number (71537105808).

Almost surely, 2^531321313211 is an apocalyptic number.

531321313211 is a deficient number, since it is larger than the sum of its proper divisors (40975533253).

531321313211 is a wasteful number, since it uses less digits than its factorization.

531321313211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7475941.

The product of its digits is 1620, while the sum is 26.

Adding to 531321313211 its reverse (112313123135), we get a palindrome (643634436346).

The spelling of 531321313211 in words is "five hundred thirty-one billion, three hundred twenty-one million, three hundred thirteen thousand, two hundred eleven".