231780533472 has 36 divisors (see below), whose sum is σ = 659125892880. Its totient is φ = 77260177728.

The previous prime is 231780533461. The next prime is 231780533549. The reversal of 231780533472 is 274335087132.

It is a happy number.

231780533472 is a `hidden beast` number, since 2 + 3 + 1 + 78 + 0 + 533 + 47 + 2 = 666.

231780533472 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 402396472 + ... + 402397047.

It is an arithmetic number, because the mean of its divisors is an integer number (18309052580).

Almost surely, 2^231780533472 is an apocalyptic number.

It is an amenable number.

231780533472 is an abundant number, since it is smaller than the sum of its proper divisors (427345359408).

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

231780533472 is a wasteful number, since it uses less digits than its factorization.

231780533472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804793535 (or 804793524 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 45.

The spelling of 231780533472 in words is "two hundred thirty-one billion, seven hundred eighty million, five hundred thirty-three thousand, four hundred seventy-two".