131571323161 has 8 divisors (see below), whose sum is σ = 137134160384. Its totient is φ = 126090898560.

The previous prime is 131571323141. The next prime is 131571323171. The reversal of 131571323161 is 161323175131.

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 131571323161 - 2³⁵ = 97211584793 is a prime.

It is a super-2 number, since 2×131571323161² (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 (131571323141) 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, 20599896 + ... + 20606281.

It is an arithmetic number, because the mean of its divisors is an integer number (17141770048).

Almost surely, 2^131571323161 is an apocalyptic number.

It is an amenable number.

131571323161 is a deficient number, since it is larger than the sum of its proper divisors (5562837223).

131571323161 is a wasteful number, since it uses less digits than its factorization.

131571323161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41206311.

The product of its digits is 11340, while the sum is 34.

Adding to 131571323161 its reverse (161323175131), we get a palindrome (292894498292).

The spelling of 131571323161 in words is "one hundred thirty-one billion, five hundred seventy-one million, three hundred twenty-three thousand, one hundred sixty-one".