231233130121000 has 256 divisors, whose sum is σ = 619852746240000. Its totient is φ = 79091657395200.

The previous prime is 231233130120959. The next prime is 231233130121069. The reversal of 231233130121000 is 121031332132.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15065021326 + ... + 15065036674.

It is an arithmetic number, because the mean of its divisors is an integer number (2421299790000).

Almost surely, 2^{231233130121000} is an apocalyptic number.

231233130121000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231233130121000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (309926373120000).

231233130121000 is an abundant number, since it is smaller than the sum of its proper divisors (388619616119000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231233130121000 is a wasteful number, since it uses less digits than its factorization.

231233130121000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20349 (or 20335 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 231233130121000 its reverse (121031332132), we get a palindrome (231354161453132).

The spelling of 231233130121000 in words is "two hundred thirty-one trillion, two hundred thirty-three billion, one hundred thirty million, one hundred twenty-one thousand".