31232032013321 has 16 divisors (see below), whose sum is σ = 33636765786000. Its totient is φ = 28938144872448.

The previous prime is 31232032013297. The next prime is 31232032013339. The reversal of 31232032013321 is 12331023023213.

It can be written as a sum of positive squares in 8 ways, for example, as 282960163600 + 30949071849721 = 531940^2 + 5563189^2 .

It is a cyclic number.

It is not a de Polignac number, because 31232032013321 - 2¹⁰ = 31232032012297 is a prime.

It is a super-2 number, since 2×31232032013321² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31232032013341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199286096 + ... + 199442753.

It is an arithmetic number, because the mean of its divisors is an integer number (2102297861625).

Almost surely, 2^{31232032013321} is an apocalyptic number.

It is an amenable number.

31232032013321 is a deficient number, since it is larger than the sum of its proper divisors (2404733772679).

31232032013321 is a wasteful number, since it uses less digits than its factorization.

31232032013321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398728988.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 31232032013321 its reverse (12331023023213), we get a palindrome (43563055036534).

The spelling of 31232032013321 in words is "thirty-one trillion, two hundred thirty-two billion, thirty-two million, thirteen thousand, three hundred twenty-one".