231843401856 has 1152 divisors, whose sum is σ = 835332264000. Its totient is φ = 61064478720.

The previous prime is 231843401851. The next prime is 231843401869. The reversal of 231843401856 is 658104348132.

231843401856 is a `hidden beast` number, since 2 + 31 + 8 + 434 + 0 + 185 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (1152).

It is not an unprimeable number, because it can be changed into a prime (231843401851) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 3929549155 + ... + 3929549213.

Almost surely, 2^231843401856 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 231843401856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (417666132000).

231843401856 is an abundant number, since it is smaller than the sum of its proper divisors (603488862144).

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

231843401856 is a wasteful number, since it uses less digits than its factorization.

231843401856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

Adding to 231843401856 its reverse (658104348132), we get a palindrome (889947749988).

The spelling of 231843401856 in words is "two hundred thirty-one billion, eight hundred forty-three million, four hundred one thousand, eight hundred fifty-six".