21131433041 has 16 divisors (see below), whose sum is σ = 22722267456. Its totient is φ = 19579608576.

The previous prime is 21131433023. The next prime is 21131433077. The reversal of 21131433041 is 14033413112.

It is a cyclic number.

It is not a de Polignac number, because 21131433041 - 2³⁴ = 3951563857 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21131432998 and 21131433016.

It is not an unprimeable number, because it can be changed into a prime (21131435041) 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, 2258525 + ... + 2267861.

It is an arithmetic number, because the mean of its divisors is an integer number (1420141716).

Almost surely, 2^21131433041 is an apocalyptic number.

It is an amenable number.

21131433041 is a deficient number, since it is larger than the sum of its proper divisors (1590834415).

21131433041 is a wasteful number, since it uses less digits than its factorization.

21131433041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11408.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21131433041 its reverse (14033413112), we get a palindrome (35164846153).

The spelling of 21131433041 in words is "twenty-one billion, one hundred thirty-one million, four hundred thirty-three thousand, forty-one".