31700041 has 2 divisors, whose sum is σ = 31700042. Its totient is φ = 31700040.

The previous prime is 31700033. The next prime is 31700047. The reversal of 31700041 is 14000713.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31685641 + 14400 = 5629^2 + 120^2 .

It is an emirp because it is prime and its reverse (14000713) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31700041 - 2³ = 31700033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31699988 and 31700024.

It is not a weakly prime, because it can be changed into another prime (31700047) 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, 15850020 + 15850021.

It is an arithmetic number, because the mean of its divisors is an integer number (15850021).

Almost surely, 2^31700041 is an apocalyptic number.

It is an amenable number.

31700041 is a deficient number, since it is larger than the sum of its proper divisors (1).

31700041 is an equidigital number, since it uses as much as digits as its factorization.

31700041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 31700041 is about 5630.2789451323. The cubic root of 31700041 is about 316.4851045385.

Adding to 31700041 its reverse (14000713), we get a palindrome (45700754).

The spelling of 31700041 in words is "thirty-one million, seven hundred thousand, forty-one".