231121144324 has 96 divisors (see below), whose sum is σ = 475301675520. Its totient is φ = 96290767872.

The previous prime is 231121144253. The next prime is 231121144333. The reversal of 231121144324 is 423441121132.

It is a happy number.

231121144324 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 231121144292 and 231121144301.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 186839434 + ... + 186840670.

It is an arithmetic number, because the mean of its divisors is an integer number (4951059120).

Almost surely, 2^231121144324 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231121144324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237650837760).

231121144324 is an abundant number, since it is smaller than the sum of its proper divisors (244180531196).

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

231121144324 is a wasteful number, since it uses less digits than its factorization.

231121144324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2357 (or 2355 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

Adding to 231121144324 its reverse (423441121132), we get a palindrome (654562265456).

It can be divided in two parts, 2311211 and 44324, that added together give a triangular number (2355535 = T₂₁₇₀).

The spelling of 231121144324 in words is "two hundred thirty-one billion, one hundred twenty-one million, one hundred forty-four thousand, three hundred twenty-four".