41031561 has 4 divisors (see below), whose sum is σ = 54708752. Its totient is φ = 27354372.

The previous prime is 41031559. The next prime is 41031577. The reversal of 41031561 is 16513014.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 41031561 - 2¹ = 41031559 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (41031511) 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, 6838591 + ... + 6838596.

It is an arithmetic number, because the mean of its divisors is an integer number (13677188).

Almost surely, 2^41031561 is an apocalyptic number.

It is an amenable number.

41031561 is a deficient number, since it is larger than the sum of its proper divisors (13677191).

41031561 is a wasteful number, since it uses less digits than its factorization.

41031561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13677190.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 41031561 is about 6405.5882633838. The cubic root of 41031561 is about 344.9101803565.

Adding to 41031561 its reverse (16513014), we get a palindrome (57544575).

The spelling of 41031561 in words is "forty-one million, thirty-one thousand, five hundred sixty-one".