131550204055 has 4 divisors (see below), whose sum is σ = 157860244872. Its totient is φ = 105240163240.

The previous prime is 131550203971. The next prime is 131550204059. The reversal of 131550204055 is 550402055131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 550402055131 = 631 ⋅872269501.

It is not a de Polignac number, because 131550204055 - 2²¹ = 131548106903 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131550204059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13155020401 + ... + 13155020410.

It is an arithmetic number, because the mean of its divisors is an integer number (39465061218).

Almost surely, 2^131550204055 is an apocalyptic number.

131550204055 is a deficient number, since it is larger than the sum of its proper divisors (26310040817).

131550204055 is an equidigital number, since it uses as much as digits as its factorization.

131550204055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26310040816.

The product of its (nonzero) digits is 15000, while the sum is 31.

Adding to 131550204055 its reverse (550402055131), we get a palindrome (681952259186).

The spelling of 131550204055 in words is "one hundred thirty-one billion, five hundred fifty million, two hundred four thousand, fifty-five".