231131240141 has 8 divisors (see below), whose sum is σ = 232196427000. Its totient is φ = 230068500480.

The previous prime is 231131240107. The next prime is 231131240143. The reversal of 231131240141 is 141042131132.

It can be written as a sum of positive squares in 4 ways, for example, as 1734306025 + 229396934116 = 41645^2 + 478954^2 .

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 231131240141 - 2⁶ = 231131240077 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 (231131240143) 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 7 ways as a sum of consecutive naturals, for example, 422336 + ... + 800393.

It is an arithmetic number, because the mean of its divisors is an integer number (29024553375).

Almost surely, 2^231131240141 is an apocalyptic number.

It is an amenable number.

231131240141 is a deficient number, since it is larger than the sum of its proper divisors (1065186859).

231131240141 is a wasteful number, since it uses less digits than its factorization.

231131240141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223599.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 231131240141 its reverse (141042131132), we get a palindrome (372173371273).

The spelling of 231131240141 in words is "two hundred thirty-one billion, one hundred thirty-one million, two hundred forty thousand, one hundred forty-one".