11511412303 has 4 divisors (see below), whose sum is σ = 11575011448. Its totient is φ = 11447813160.

The previous prime is 11511412291. The next prime is 11511412357. The reversal of 11511412303 is 30321411511.

It is a happy number.

11511412303 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30321411511 = 59 ⋅513922229.

It is a cyclic number.

It is not a de Polignac number, because 11511412303 - 2⁵ = 11511412271 is a prime.

It is a super-2 number, since 2×11511412303² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11511412403) 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, 31799301 + ... + 31799662.

It is an arithmetic number, because the mean of its divisors is an integer number (2893752862).

Almost surely, 2^11511412303 is an apocalyptic number.

11511412303 is a deficient number, since it is larger than the sum of its proper divisors (63599145).

11511412303 is an equidigital number, since it uses as much as digits as its factorization.

11511412303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63599144.

The product of its (nonzero) digits is 360, while the sum is 22.

Adding to 11511412303 its reverse (30321411511), we get a palindrome (41832823814).

The spelling of 11511412303 in words is "eleven billion, five hundred eleven million, four hundred twelve thousand, three hundred three".