11031649 has 4 divisors (see below), whose sum is σ = 11042836. Its totient is φ = 11020464.

The previous prime is 11031611. The next prime is 11031659. The reversal of 11031649 is 94613011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94613011 = 7699 ⋅12289.

It can be written as a sum of positive squares in 2 ways, for example, as 8958049 + 2073600 = 2993^2 + 1440^2 .

It is a cyclic number.

It is not a de Polignac number, because 11031649 - 2¹³ = 11023457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11031659) 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, 3954 + ... + 6139.

It is an arithmetic number, because the mean of its divisors is an integer number (2760709).

Almost surely, 2^11031649 is an apocalyptic number.

It is an amenable number.

11031649 is a deficient number, since it is larger than the sum of its proper divisors (11187).

11031649 is a wasteful number, since it uses less digits than its factorization.

11031649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11186.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 11031649 is about 3321.3926296058. The cubic root of 11031649 is about 222.6110979916.

The spelling of 11031649 in words is "eleven million, thirty-one thousand, six hundred forty-nine".