231155325441 has 12 divisors (see below), whose sum is σ = 334800815232. Its totient is φ = 153683647416.

The previous prime is 231155325409. The next prime is 231155325461. The reversal of 231155325441 is 144523551132.

231155325441 is a `hidden beast` number, since 2 + 3 + 11 + 553 + 2 + 54 + 41 = 666.

231155325441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 231155325441 - 2⁵ = 231155325409 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 231155325396 and 231155325405.

It is not an unprimeable number, because it can be changed into a prime (231155325461) 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 11 ways as a sum of consecutive naturals, for example, 34988421 + ... + 34995026.

It is an arithmetic number, because the mean of its divisors is an integer number (27900067936).

Almost surely, 2^231155325441 is an apocalyptic number.

It is an amenable number.

231155325441 is a deficient number, since it is larger than the sum of its proper divisors (103645489791).

231155325441 is a wasteful number, since it uses less digits than its factorization.

231155325441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69983820 (or 69983817 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

Adding to 231155325441 its reverse (144523551132), we get a palindrome (375678876573).

The spelling of 231155325441 in words is "two hundred thirty-one billion, one hundred fifty-five million, three hundred twenty-five thousand, four hundred forty-one".