11503109327 has 4 divisors (see below), whose sum is σ = 11503381320. Its totient is φ = 11502837336.

The previous prime is 11503109309. The next prime is 11503109351. The reversal of 11503109327 is 72390130511.

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 11503109327 - 2⁶ = 11503109263 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11503109293 and 11503109302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11503109377) 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, 57428 + ... + 162185.

It is an arithmetic number, because the mean of its divisors is an integer number (2875845330).

Almost surely, 2^11503109327 is an apocalyptic number.

11503109327 is a deficient number, since it is larger than the sum of its proper divisors (271993).

11503109327 is an equidigital number, since it uses as much as digits as its factorization.

11503109327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271992.

The product of its (nonzero) digits is 5670, while the sum is 32.

Adding to 11503109327 its reverse (72390130511), we get a palindrome (83893239838).

The spelling of 11503109327 in words is "eleven billion, five hundred three million, one hundred nine thousand, three hundred twenty-seven".