11131343451 has 6 divisors (see below), whose sum is σ = 16078607220. Its totient is φ = 7420895628.

The previous prime is 11131343449. The next prime is 11131343459. The reversal of 11131343451 is 15434313111.

11131343451 is a `hidden beast` number, since 1 + 1 + 1 + 313 + 4 + 345 + 1 = 666.

It is not a de Polignac number, because 11131343451 - 2¹ = 11131343449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11131343459) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 618407961 + ... + 618407978.

It is an arithmetic number, because the mean of its divisors is an integer number (2679767870).

Almost surely, 2^11131343451 is an apocalyptic number.

11131343451 is a deficient number, since it is larger than the sum of its proper divisors (4947263769).

11131343451 is a wasteful number, since it uses less digits than its factorization.

11131343451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1236815945 (or 1236815942 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

Adding to 11131343451 its reverse (15434313111), we get a palindrome (26565656562).

The spelling of 11131343451 in words is "eleven billion, one hundred thirty-one million, three hundred forty-three thousand, four hundred fifty-one".