41031135521 has 4 divisors (see below), whose sum is σ = 41050195332. Its totient is φ = 41012075712.

The previous prime is 41031135491. The next prime is 41031135571. The reversal of 41031135521 is 12553113014.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3525390625 + 37505744896 = 59375^2 + 193664^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-41031135521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (41031135571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9526676 + ... + 9530981.

It is an arithmetic number, because the mean of its divisors is an integer number (10262548833).

Almost surely, 2^41031135521 is an apocalyptic number.

It is an amenable number.

41031135521 is a deficient number, since it is larger than the sum of its proper divisors (19059811).

41031135521 is a wasteful number, since it uses less digits than its factorization.

41031135521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19059810.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 41031135521 its reverse (12553113014), we get a palindrome (53584248535).

The spelling of 41031135521 in words is "forty-one billion, thirty-one million, one hundred thirty-five thousand, five hundred twenty-one".