21131431231041 has 12 divisors (see below), whose sum is σ = 30909547793280. Its totient is φ = 13909296506040.

The previous prime is 21131431231013. The next prime is 21131431231067. The reversal of 21131431231041 is 14013213413112.

21131431231041 is a `hidden beast` number, since 2 + 1 + 1 + 31 + 4 + 312 + 310 + 4 + 1 = 666.

It is not a de Polignac number, because 21131431231041 - 2⁷ = 21131431230913 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21131431230996 and 21131431231014.

It is not an unprimeable number, because it can be changed into a prime (21131431231241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14860358805 + ... + 14860360226.

It is an arithmetic number, because the mean of its divisors is an integer number (2575795649440).

Almost surely, 2^{21131431231041} is an apocalyptic number.

It is an amenable number.

21131431231041 is a deficient number, since it is larger than the sum of its proper divisors (9778116562239).

21131431231041 is a wasteful number, since it uses less digits than its factorization.

21131431231041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29720719116 (or 29720719113 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

Adding to 21131431231041 its reverse (14013213413112), we get a palindrome (35144644644153).

The spelling of 21131431231041 in words is "twenty-one trillion, one hundred thirty-one billion, four hundred thirty-one million, two hundred thirty-one thousand, forty-one".