231444342542 has 32 divisors (see below), whose sum is σ = 410529539520. Its totient is φ = 95749920000.

The previous prime is 231444342541. The next prime is 231444342557. The reversal of 231444342542 is 245243444132.

231444342542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 231444342496 and 231444342505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231444342541) 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 15 ways as a sum of consecutive naturals, for example, 1955042 + ... + 2070042.

It is an arithmetic number, because the mean of its divisors is an integer number (12829048110).

Almost surely, 2^231444342542 is an apocalyptic number.

231444342542 is a deficient number, since it is larger than the sum of its proper divisors (179085196978).

231444342542 is a wasteful number, since it uses less digits than its factorization.

231444342542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119996.

The product of its digits is 368640, while the sum is 38.

Adding to 231444342542 its reverse (245243444132), we get a palindrome (476687786674).

The spelling of 231444342542 in words is "two hundred thirty-one billion, four hundred forty-four million, three hundred forty-two thousand, five hundred forty-two".