133531254441 has 24 divisors (see below), whose sum is σ = 219933834120. Its totient is φ = 77339367936.

The previous prime is 133531254431. The next prime is 133531254469. The reversal of 133531254441 is 144452135331.

133531254441 is a `hidden beast` number, since 1 + 33 + 531 + 2 + 54 + 4 + 41 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 27815234841 + 105716019600 = 166779^2 + 325140^2 .

It is not a de Polignac number, because 133531254441 - 2⁷ = 133531254313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133531254396 and 133531254405.

It is not an unprimeable number, because it can be changed into a prime (133531254431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33565446 + ... + 33569423.

It is an arithmetic number, because the mean of its divisors is an integer number (9163909755).

Almost surely, 2^133531254441 is an apocalyptic number.

It is an amenable number.

133531254441 is a deficient number, since it is larger than the sum of its proper divisors (86402579679).

133531254441 is a wasteful number, since it uses less digits than its factorization.

133531254441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67134905 (or 67134902 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

Adding to 133531254441 its reverse (144452135331), we get a palindrome (277983389772).

The spelling of 133531254441 in words is "one hundred thirty-three billion, five hundred thirty-one million, two hundred fifty-four thousand, four hundred forty-one".