231853974912 has 768 divisors, whose sum is σ = 818360524800. Its totient is φ = 63973214208.

The previous prime is 231853974893. The next prime is 231853974917. The reversal of 231853974912 is 219479358132.

231853974912 is a `hidden beast` number, since 2 + 3 + 18 + 53 + 97 + 491 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231853974917) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1422416943 + ... + 1422417105.

It is an arithmetic number, because the mean of its divisors is an integer number (1065573600).

Almost surely, 2^231853974912 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 231853974912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (409180262400).

231853974912 is an abundant number, since it is smaller than the sum of its proper divisors (586506549888).

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

231853974912 is a wasteful number, since it uses less digits than its factorization.

231853974912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385 (or 361 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The spelling of 231853974912 in words is "two hundred thirty-one billion, eight hundred fifty-three million, nine hundred seventy-four thousand, nine hundred twelve".