231232130021121 has 8 divisors (see below), whose sum is σ = 314126667198720. Its totient is φ = 151246173095472.

The previous prime is 231232130021083. The next prime is 231232130021149. The reversal of 231232130021121 is 121120031232132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 231232130021121 - 2⁹ = 231232130020609 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 231232130021091 and 231232130021100.

It is not an unprimeable number, because it can be changed into a prime (231232130071121) 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, 727145062801 + ... + 727145063118.

It is an arithmetic number, because the mean of its divisors is an integer number (39265833399840).

Almost surely, 2^{231232130021121} is an apocalyptic number.

It is an amenable number.

231232130021121 is a deficient number, since it is larger than the sum of its proper divisors (82894537177599).

231232130021121 is a wasteful number, since it uses less digits than its factorization.

231232130021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1454290125975.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 231232130021121 its reverse (121120031232132), we get a palindrome (352352161253253).

The spelling of 231232130021121 in words is "two hundred thirty-one trillion, two hundred thirty-two billion, one hundred thirty million, twenty-one thousand, one hundred twenty-one".