11131345 has 8 divisors (see below), whose sum is σ = 14143464. Its totient is φ = 8381184.

The previous prime is 11131327. The next prime is 11131349. The reversal of 11131345 is 54313111.

11131345 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 627264 + 10504081 = 792^2 + 3241^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11131345 - 2¹¹ = 11129297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11131349) 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 in 7 ways as a sum of consecutive naturals, for example, 65394 + ... + 65563.

It is an arithmetic number, because the mean of its divisors is an integer number (1767933).

Almost surely, 2^11131345 is an apocalyptic number.

It is an amenable number.

11131345 is a deficient number, since it is larger than the sum of its proper divisors (3012119).

11131345 is a wasteful number, since it uses less digits than its factorization.

11131345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130979.

The product of its digits is 180, while the sum is 19.

The square root of 11131345 is about 3336.3670361637. The cubic root of 11131345 is about 223.2796868746.

Adding to 11131345 its reverse (54313111), we get a palindrome (65444456).

It can be divided in two parts, 11131 and 345, that added together give a triangular number (11476 = T₁₅₁).

The spelling of 11131345 in words is "eleven million, one hundred thirty-one thousand, three hundred forty-five".