231224123400 has 192 divisors, whose sum is σ = 744052020480. Its totient is φ = 59358105600.

The previous prime is 231224123393. The next prime is 231224123441. The reversal of 231224123400 is 4321422132.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1652992 + ... + 1787408.

It is an arithmetic number, because the mean of its divisors is an integer number (3875270940).

Almost surely, 2^231224123400 is an apocalyptic number.

231224123400 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 231224123400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (372026010240).

231224123400 is an abundant number, since it is smaller than the sum of its proper divisors (512827897080).

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

231224123400 is a wasteful number, since it uses less digits than its factorization.

231224123400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134544 (or 134535 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 231224123400 its reverse (4321422132), we get a palindrome (235545545532).

The spelling of 231224123400 in words is "two hundred thirty-one billion, two hundred twenty-four million, one hundred twenty-three thousand, four hundred".