11551424131 has 8 divisors (see below), whose sum is σ = 12441398480. Its totient is φ = 10661650272.

The previous prime is 11551424123. The next prime is 11551424141. The reversal of 11551424131 is 13142415511.

It is a happy number.

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

It is not a de Polignac number, because 11551424131 - 2³ = 11551424123 is a prime.

It is a super-2 number, since 2×11551424131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11551424131.

It is not an unprimeable number, because it can be changed into a prime (11551424111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82576 + ... + 172978.

It is an arithmetic number, because the mean of its divisors is an integer number (1555174810).

Almost surely, 2^11551424131 is an apocalyptic number.

11551424131 is a deficient number, since it is larger than the sum of its proper divisors (889974349).

11551424131 is an equidigital number, since it uses as much as digits as its factorization.

11551424131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100245.

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

Adding to 11551424131 its reverse (13142415511), we get a palindrome (24693839642).

The spelling of 11551424131 in words is "eleven billion, five hundred fifty-one million, four hundred twenty-four thousand, one hundred thirty-one".