11971033 has 2 divisors, whose sum is σ = 11971034. Its totient is φ = 11971032.

The previous prime is 11971013. The next prime is 11971039. The reversal of 11971033 is 33017911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10413529 + 1557504 = 3227^2 + 1248^2 .

It is a cyclic number.

It is not a de Polignac number, because 11971033 - 2⁹ = 11970521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11970989 and 11971007.

It is not a weakly prime, because it can be changed into another prime (11971039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5985516 + 5985517.

It is an arithmetic number, because the mean of its divisors is an integer number (5985517).

Almost surely, 2^11971033 is an apocalyptic number.

It is an amenable number.

11971033 is a deficient number, since it is larger than the sum of its proper divisors (1).

11971033 is an equidigital number, since it uses as much as digits as its factorization.

11971033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 567, while the sum is 25.

The square root of 11971033 is about 3459.9180626136. The cubic root of 11971033 is about 228.7584837647.

Adding to 11971033 its product of nonzero digits (567), we get a square (11971600 = 3460²).

Adding to 11971033 its reverse (33017911), we get a palindrome (44988944).

The spelling of 11971033 in words is "eleven million, nine hundred seventy-one thousand, thirty-three".