231602444561 has 8 divisors (see below), whose sum is σ = 232110557280. Its totient is φ = 231094792512.

The previous prime is 231602444483. The next prime is 231602444581. The reversal of 231602444561 is 165444206132.

231602444561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231602444561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231602444581) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 901241 + ... + 1129353.

It is an arithmetic number, because the mean of its divisors is an integer number (29013819660).

Almost surely, 2^231602444561 is an apocalyptic number.

It is an amenable number.

231602444561 is a deficient number, since it is larger than the sum of its proper divisors (508112719).

231602444561 is a wasteful number, since it uses less digits than its factorization.

231602444561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230335.

The product of its (nonzero) digits is 138240, while the sum is 38.

The spelling of 231602444561 in words is "two hundred thirty-one billion, six hundred two million, four hundred forty-four thousand, five hundred sixty-one".