11071331523 has 48 divisors (see below), whose sum is σ = 18534297600. Its totient is φ = 6237466560.

The previous prime is 11071331519. The next prime is 11071331569. The reversal of 11071331523 is 32513317011.

It is a happy number.

11071331523 is a `hidden beast` number, since 1 + 1 + 0 + 7 + 133 + 1 + 523 = 666.

It is not a de Polignac number, because 11071331523 - 2² = 11071331519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11071331503) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5170033 + ... + 5172173.

It is an arithmetic number, because the mean of its divisors is an integer number (386131200).

Almost surely, 2^11071331523 is an apocalyptic number.

11071331523 is a deficient number, since it is larger than the sum of its proper divisors (7462966077).

11071331523 is a wasteful number, since it uses less digits than its factorization.

11071331523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3272 (or 3269 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

Adding to 11071331523 its reverse (32513317011), we get a palindrome (43584648534).

The spelling of 11071331523 in words is "eleven billion, seventy-one million, three hundred thirty-one thousand, five hundred twenty-three".