11280523 has 4 divisors (see below), whose sum is σ = 11585440. Its totient is φ = 10975608.

The previous prime is 11280473. The next prime is 11280527. The reversal of 11280523 is 32508211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11280523 - 2⁹ = 11280011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11280494 and 11280503.

It is not an unprimeable number, because it can be changed into a prime (11280527) 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, 152403 + ... + 152476.

It is an arithmetic number, because the mean of its divisors is an integer number (2896360).

Almost surely, 2^11280523 is an apocalyptic number.

11280523 is a deficient number, since it is larger than the sum of its proper divisors (304917).

11280523 is an equidigital number, since it uses as much as digits as its factorization.

11280523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304916.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 11280523 is about 3358.6489843388. The cubic root of 11280523 is about 224.2727001368.

Adding to 11280523 its reverse (32508211), we get a palindrome (43788734).

The spelling of 11280523 in words is "eleven million, two hundred eighty thousand, five hundred twenty-three".