231321203332 has 12 divisors (see below), whose sum is σ = 405897395596. Its totient is φ = 115350518880.

The previous prime is 231321203317. The next prime is 231321203441. The reversal of 231321203332 is 233302123132.

It can be written as a sum of positive squares in 2 ways, for example, as 168934152256 + 62387051076 = 411016^2 + 249774^2 .

It is a super-2 number, since 2×231321203332² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231321203297 and 231321203306.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77519019 + ... + 77522002.

Almost surely, 2^231321203332 is an apocalyptic number.

It is an amenable number.

231321203332 is a deficient number, since it is larger than the sum of its proper divisors (174576192264).

231321203332 is a wasteful number, since it uses less digits than its factorization.

231321203332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155041398 (or 155041396 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 231321203332 its reverse (233302123132), we get a palindrome (464623326464).

The spelling of 231321203332 in words is "two hundred thirty-one billion, three hundred twenty-one million, two hundred three thousand, three hundred thirty-two".