231201120321 has 24 divisors (see below), whose sum is σ = 334600348160. Its totient is φ = 153837462816.

The previous prime is 231201120301. The next prime is 231201120343. The reversal of 231201120321 is 123021102132.

231201120321 is a `hidden beast` number, since 2 + 312 + 0 + 11 + 20 + 321 = 666.

It is not a de Polignac number, because 231201120321 - 2⁵ = 231201120289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231201120294 and 231201120303.

It is not an unprimeable number, because it can be changed into a prime (231201120301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14049120 + ... + 14065566.

Almost surely, 2^231201120321 is an apocalyptic number.

It is an amenable number.

231201120321 is a deficient number, since it is larger than the sum of its proper divisors (103399227839).

231201120321 is a wasteful number, since it uses less digits than its factorization.

231201120321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19365 (or 19362 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 231201120321 its reverse (123021102132), we get a palindrome (354222222453).

It can be divided in two parts, 2312011 and 20321, that added together give a palindrome (2332332).

The spelling of 231201120321 in words is "two hundred thirty-one billion, two hundred one million, one hundred twenty thousand, three hundred twenty-one".