11331649 has 4 divisors (see below), whose sum is σ = 12950464. Its totient is φ = 9712836.

The previous prime is 11331641. The next prime is 11331659. The reversal of 11331649 is 94613311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94613311 = 13 ⋅7277947.

It is not a de Polignac number, because 11331649 - 2³ = 11331641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11331641) 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, 809397 + ... + 809410.

It is an arithmetic number, because the mean of its divisors is an integer number (3237616).

Almost surely, 2^11331649 is an apocalyptic number.

It is an amenable number.

11331649 is a deficient number, since it is larger than the sum of its proper divisors (1618815).

11331649 is an equidigital number, since it uses as much as digits as its factorization.

11331649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1618814.

The product of its digits is 1944, while the sum is 28.

The square root of 11331649 is about 3366.2514760487. The cubic root of 11331649 is about 224.6110085377.

The spelling of 11331649 in words is "eleven million, three hundred thirty-one thousand, six hundred forty-nine".