11481047 has 4 divisors (see below), whose sum is σ = 11511720. Its totient is φ = 11450376.

The previous prime is 11481037. The next prime is 11481049. The reversal of 11481047 is 74018411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74018411 = 29 ⋅2552359.

It is a cyclic number.

It is not a de Polignac number, because 11481047 - 2¹⁸ = 11218903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11481049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14768 + ... + 15525.

It is an arithmetic number, because the mean of its divisors is an integer number (2877930).

Almost surely, 2^11481047 is an apocalyptic number.

11481047 is a deficient number, since it is larger than the sum of its proper divisors (30673).

11481047 is an equidigital number, since it uses as much as digits as its factorization.

11481047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30672.

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 11481047 is about 3388.3693718365. The cubic root of 11481047 is about 225.5938026964.

Adding to 11481047 its reverse (74018411), we get a palindrome (85499458).

The spelling of 11481047 in words is "eleven million, four hundred eighty-one thousand, forty-seven".