11500331011 has 4 divisors (see below), whose sum is σ = 12384971872. Its totient is φ = 10615690152.

The previous prime is 11500330979. The next prime is 11500331021. The reversal of 11500331011 is 11013300511.

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 11500331011 - 2⁵ = 11500330979 is a prime.

It is a super-2 number, since 2×11500331011² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11500331021) 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, 442320411 + ... + 442320436.

It is an arithmetic number, because the mean of its divisors is an integer number (3096242968).

Almost surely, 2^11500331011 is an apocalyptic number.

11500331011 is a deficient number, since it is larger than the sum of its proper divisors (884640861).

11500331011 is an equidigital number, since it uses as much as digits as its factorization.

11500331011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884640860.

The product of its (nonzero) digits is 45, while the sum is 16.

Adding to 11500331011 its reverse (11013300511), we get a palindrome (22513631522).

The spelling of 11500331011 in words is "eleven billion, five hundred million, three hundred thirty-one thousand, eleven".