131435534153551 has 4 divisors (see below), whose sum is σ = 131435565547104. Its totient is φ = 131435502760000.

The previous prime is 131435534153387. The next prime is 131435534153593. The reversal of 131435534153551 is 155351435534131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131435534153551 - 2²¹ = 131435532056399 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131435534153495 and 131435534153504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131435534153251) 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, 8234050 + ... + 18184351.

It is an arithmetic number, because the mean of its divisors is an integer number (32858891386776).

Almost surely, 2^{131435534153551} is an apocalyptic number.

131435534153551 is a deficient number, since it is larger than the sum of its proper divisors (31393553).

131435534153551 is an equidigital number, since it uses as much as digits as its factorization.

131435534153551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31393552.

The product of its digits is 4050000, while the sum is 49.

Adding to 131435534153551 its reverse (155351435534131), we get a palindrome (286786969687682).

The spelling of 131435534153551 in words is "one hundred thirty-one trillion, four hundred thirty-five billion, five hundred thirty-four million, one hundred fifty-three thousand, five hundred fifty-one".