131435640571 has 8 divisors (see below), whose sum is σ = 136485793584. Its totient is φ = 126473316480.

The previous prime is 131435640559. The next prime is 131435640619. The reversal of 131435640571 is 175046534131.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 131435640571 - 2⁹ = 131435640059 is a prime.

It is a super-2 number, since 2×131435640571² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131435640521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21954181 + ... + 21960166.

It is an arithmetic number, because the mean of its divisors is an integer number (17060724198).

Almost surely, 2^131435640571 is an apocalyptic number.

131435640571 is a deficient number, since it is larger than the sum of its proper divisors (5050153013).

131435640571 is an equidigital number, since it uses as much as digits as its factorization.

131435640571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43914461.

The product of its (nonzero) digits is 151200, while the sum is 40.

The spelling of 131435640571 in words is "one hundred thirty-one billion, four hundred thirty-five million, six hundred forty thousand, five hundred seventy-one".