231405105120 has 192 divisors, whose sum is σ = 833259280896. Its totient is φ = 52879841280.

The previous prime is 231405105109. The next prime is 231405105161. The reversal of 231405105120 is 21501504132.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26912662 + ... + 26921258.

It is an arithmetic number, because the mean of its divisors is an integer number (4339892088).

Almost surely, 2^231405105120 is an apocalyptic number.

231405105120 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 231405105120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (416629640448).

231405105120 is an abundant number, since it is smaller than the sum of its proper divisors (601854175776).

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

231405105120 is a wasteful number, since it uses less digits than its factorization.

231405105120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16633 (or 16625 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 231405105120 its reverse (21501504132), we get a palindrome (252906609252).

The spelling of 231405105120 in words is "two hundred thirty-one billion, four hundred five million, one hundred five thousand, one hundred twenty".