11531244151 has 8 divisors (see below), whose sum is σ = 13180678560. Its totient is φ = 9882338208.

The previous prime is 11531244091. The next prime is 11531244157. The reversal of 11531244151 is 15144213511.

It is a happy number.

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 11531244151 - 2¹⁵ = 11531211383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11531244157) 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, 84196 + ... + 173641.

It is an arithmetic number, because the mean of its divisors is an integer number (1647584820).

Almost surely, 2^11531244151 is an apocalyptic number.

11531244151 is a deficient number, since it is larger than the sum of its proper divisors (1649434409).

11531244151 is an equidigital number, since it uses as much as digits as its factorization.

11531244151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264233.

The product of its digits is 2400, while the sum is 28.

Adding to 11531244151 its reverse (15144213511), we get a palindrome (26675457662).

The spelling of 11531244151 in words is "eleven billion, five hundred thirty-one million, two hundred forty-four thousand, one hundred fifty-one".