231221031123000 has 256 divisors, whose sum is σ = 723267291277440. Its totient is φ = 61500321792000.

The previous prime is 231221031122969. The next prime is 231221031123041. The reversal of 231221031123000 is 321130122132.

231221031123000 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×231221031123000² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

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, 2427291372 + ... + 2427386628.

Almost surely, 2^{231221031123000} is an apocalyptic number.

231221031123000 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 231221031123000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (361633645638720).

231221031123000 is an abundant number, since it is smaller than the sum of its proper divisors (492046260154440).

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

231221031123000 is a wasteful number, since it uses less digits than its factorization.

231221031123000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97355 (or 97341 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 231221031123000 its reverse (321130122132), we get a palindrome (231542161245132).

The spelling of 231221031123000 in words is "two hundred thirty-one trillion, two hundred twenty-one billion, thirty-one million, one hundred twenty-three thousand".