11031161 has 2 divisors, whose sum is σ = 11031162. Its totient is φ = 11031160.

The previous prime is 11031121. The next prime is 11031169. The reversal of 11031161 is 16113011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8410000 + 2621161 = 2900^2 + 1619^2 .

It is a cyclic number.

It is not a de Polignac number, because 11031161 - 2¹⁰ = 11030137 is a prime.

It is not a weakly prime, because it can be changed into another prime (11031169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5515580 + 5515581.

It is an arithmetic number, because the mean of its divisors is an integer number (5515581).

Almost surely, 2^11031161 is an apocalyptic number.

It is an amenable number.

11031161 is a deficient number, since it is larger than the sum of its proper divisors (1).

11031161 is an equidigital number, since it uses as much as digits as its factorization.

11031161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 11031161 is about 3321.3191656328. The cubic root of 11031161 is about 222.6078154416.

Adding to 11031161 its reverse (16113011), we get a palindrome (27144172).

The spelling of 11031161 in words is "eleven million, thirty-one thousand, one hundred sixty-one".