231261054443 has 16 divisors (see below), whose sum is σ = 240518885376. Its totient is φ = 222177764160.

The previous prime is 231261054439. The next prime is 231261054499. The reversal of 231261054443 is 344450162132.

It is a cyclic number.

It is not a de Polignac number, because 231261054443 - 2² = 231261054439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231261054643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9170630 + ... + 9195812.

It is an arithmetic number, because the mean of its divisors is an integer number (15032430336).

Almost surely, 2^231261054443 is an apocalyptic number.

231261054443 is a deficient number, since it is larger than the sum of its proper divisors (9257830933).

231261054443 is a wasteful number, since it uses less digits than its factorization.

231261054443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28634.

The product of its (nonzero) digits is 69120, while the sum is 35.

The spelling of 231261054443 in words is "two hundred thirty-one billion, two hundred sixty-one million, fifty-four thousand, four hundred forty-three".