13311644 has 6 divisors (see below), whose sum is σ = 23295384. Its totient is φ = 6655820.

The previous prime is 13311643. The next prime is 13311653. The reversal of 13311644 is 44611331.

It is a super-3 number, since 3×13311644³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13311643) 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, 1663952 + ... + 1663959.

It is an arithmetic number, because the mean of its divisors is an integer number (3882564).

Almost surely, 2^13311644 is an apocalyptic number.

It is an amenable number.

13311644 is a deficient number, since it is larger than the sum of its proper divisors (9983740).

13311644 is a wasteful number, since it uses less digits than its factorization.

13311644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3327915 (or 3327913 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

The square root of 13311644 is about 3648.5125736387. The cubic root of 13311644 is about 236.9975727763.

Adding to 13311644 its reverse (44611331), we get a palindrome (57922975).

The spelling of 13311644 in words is "thirteen million, three hundred eleven thousand, six hundred forty-four".