131144551 has 8 divisors (see below), whose sum is σ = 139167360. Its totient is φ = 123315192.

The previous prime is 131144543. The next prime is 131144569. The reversal of 131144551 is 155441131.

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

It is not a de Polignac number, because 131144551 - 2³ = 131144543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131144501) 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, 46965 + ... + 49678.

It is an arithmetic number, because the mean of its divisors is an integer number (17395920).

Almost surely, 2^131144551 is an apocalyptic number.

131144551 is a deficient number, since it is larger than the sum of its proper divisors (8022809).

131144551 is an equidigital number, since it uses as much as digits as its factorization.

131144551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96725.

The product of its digits is 1200, while the sum is 25.

The square root of 131144551 is about 11451.8361409863. The cubic root of 131144551 is about 508.0620429214.

Adding to 131144551 its reverse (155441131), we get a palindrome (286585682).

The spelling of 131144551 in words is "one hundred thirty-one million, one hundred forty-four thousand, five hundred fifty-one".