31806041 has 2 divisors, whose sum is σ = 31806042. Its totient is φ = 31806040.

The previous prime is 31806017. The next prime is 31806067. The reversal of 31806041 is 14060813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28847641 + 2958400 = 5371^2 + 1720^2 .

It is a cyclic number.

It is not a de Polignac number, because 31806041 - 2¹⁰ = 31805017 is a prime.

It is a super-4 number, since 4×31806041⁴ (a number of 31 digits) contains 4444 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 31805998 and 31806016.

It is not a weakly prime, because it can be changed into another prime (31806001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15903020 + 15903021.

It is an arithmetic number, because the mean of its divisors is an integer number (15903021).

Almost surely, 2^31806041 is an apocalyptic number.

It is an amenable number.

31806041 is a deficient number, since it is larger than the sum of its proper divisors (1).

31806041 is an equidigital number, since it uses as much as digits as its factorization.

31806041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 31806041 is about 5639.6844769898. The cubic root of 31806041 is about 316.8374710433.

Adding to 31806041 its reverse (14060813), we get a palindrome (45866854).

The spelling of 31806041 in words is "thirty-one million, eight hundred six thousand, forty-one".