231321112121 has 8 divisors (see below), whose sum is σ = 258218916384. Its totient is φ = 205401409920.

The previous prime is 231321112103. The next prime is 231321112123. The reversal of 231321112121 is 121211123132.

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 231321112121 - 2¹⁴ = 231321095737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231321112093 and 231321112102.

It is not an unprimeable number, because it can be changed into a prime (231321112123) 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, 244525016 + ... + 244525961.

It is an arithmetic number, because the mean of its divisors is an integer number (32277364548).

Almost surely, 2^231321112121 is an apocalyptic number.

It is an amenable number.

231321112121 is a deficient number, since it is larger than the sum of its proper divisors (26897804263).

231321112121 is a wasteful number, since it uses less digits than its factorization.

231321112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489051031.

The product of its digits is 144, while the sum is 20.

Adding to 231321112121 its reverse (121211123132), we get a palindrome (352532235253).

The spelling of 231321112121 in words is "two hundred thirty-one billion, three hundred twenty-one million, one hundred twelve thousand, one hundred twenty-one".