231120012024 has 144 divisors (see below), whose sum is σ = 704809974960. Its totient is φ = 68328057600.

The previous prime is 231120011999. The next prime is 231120012041. The reversal of 231120012024 is 420210021132.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 231120011988 and 231120012006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 33669 + ... + 680715.

It is an arithmetic number, because the mean of its divisors is an integer number (4894513715).

Almost surely, 2^231120012024 is an apocalyptic number.

231120012024 is a gapful number since it is divisible by the number (24) 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 231120012024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (352404987480).

231120012024 is an abundant number, since it is smaller than the sum of its proper divisors (473689962936).

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

231120012024 is a wasteful number, since it uses less digits than its factorization.

231120012024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647122 (or 647104 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 231120012024 its reverse (420210021132), we get a palindrome (651330033156).

The spelling of 231120012024 in words is "two hundred thirty-one billion, one hundred twenty million, twelve thousand, twenty-four".