231142550441 has 16 divisors (see below), whose sum is σ = 257246020800. Its totient is φ = 205897773120.

The previous prime is 231142550399. The next prime is 231142550477. The reversal of 231142550441 is 144055241132.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231142550441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231142550398 and 231142550407.

It is not an unprimeable number, because it can be changed into a prime (231142550741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194210 + ... + 707108.

It is an arithmetic number, because the mean of its divisors is an integer number (16077876300).

Almost surely, 2^231142550441 is an apocalyptic number.

It is an amenable number.

231142550441 is a deficient number, since it is larger than the sum of its proper divisors (26103470359).

231142550441 is a wasteful number, since it uses less digits than its factorization.

231142550441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513736.

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 231142550441 its reverse (144055241132), we get a palindrome (375197791573).

The spelling of 231142550441 in words is "two hundred thirty-one billion, one hundred forty-two million, five hundred fifty thousand, four hundred forty-one".