231601375447 has 8 divisors (see below), whose sum is σ = 249420607520. Its totient is φ = 213782677920.

The previous prime is 231601375417. The next prime is 231601375451. The reversal of 231601375447 is 744573106132.

231601375447 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 not a de Polignac number, because 231601375447 - 2²³ = 231592986839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231601375417) 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, 1583422 + ... + 1723492.

It is an arithmetic number, because the mean of its divisors is an integer number (31177575940).

Almost surely, 2^231601375447 is an apocalyptic number.

231601375447 is a deficient number, since it is larger than the sum of its proper divisors (17819232073).

231601375447 is a wasteful number, since it uses less digits than its factorization.

231601375447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267273.

The product of its (nonzero) digits is 423360, while the sum is 43.

The spelling of 231601375447 in words is "two hundred thirty-one billion, six hundred one million, three hundred seventy-five thousand, four hundred forty-seven".