131551635253 has 4 divisors (see below), whose sum is σ = 131864109868. Its totient is φ = 131239160640.

The previous prime is 131551635251. The next prime is 131551635283. The reversal of 131551635253 is 352536155131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 352536155131 = 15443 ⋅22828217.

It can be written as a sum of positive squares in 2 ways, for example, as 34841208964 + 96710426289 = 186658^2 + 310983^2 .

It is a cyclic number.

It is not a de Polignac number, because 131551635253 - 2¹ = 131551635251 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 (131551635251) 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 3 ways as a sum of consecutive naturals, for example, 156236676 + ... + 156237517.

It is an arithmetic number, because the mean of its divisors is an integer number (32966027467).

Almost surely, 2^131551635253 is an apocalyptic number.

It is an amenable number.

131551635253 is a deficient number, since it is larger than the sum of its proper divisors (312474615).

131551635253 is an equidigital number, since it uses as much as digits as its factorization.

131551635253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312474614.

The product of its digits is 202500, while the sum is 40.

The spelling of 131551635253 in words is "one hundred thirty-one billion, five hundred fifty-one million, six hundred thirty-five thousand, two hundred fifty-three".