11131230551 has 8 divisors (see below), whose sum is σ = 12750925824. Its totient is φ = 9518915160.

The previous prime is 11131230533. The next prime is 11131230569. The reversal of 11131230551 is 15503213111.

It is an interprime number because it is at equal distance from previous prime (11131230533) and next prime (11131230569).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11131230551 - 2¹⁴ = 11131214167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11131230511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1841735 + ... + 1847768.

It is an arithmetic number, because the mean of its divisors is an integer number (1593865728).

Almost surely, 2^11131230551 is an apocalyptic number.

11131230551 is a deficient number, since it is larger than the sum of its proper divisors (1619695273).

11131230551 is an equidigital number, since it uses as much as digits as its factorization.

11131230551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3689941.

The product of its (nonzero) digits is 450, while the sum is 23.

Adding to 11131230551 its reverse (15503213111), we get a palindrome (26634443662).

The spelling of 11131230551 in words is "eleven billion, one hundred thirty-one million, two hundred thirty thousand, five hundred fifty-one".