131572171301771 has 4 divisors (see below), whose sum is σ = 136109142726000. Its totient is φ = 127035199877544.

The previous prime is 131572171301737. The next prime is 131572171301807. The reversal of 131572171301771 is 177103171275131.

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 131572171301771 - 2³⁰ = 131571097559947 is a prime.

It is a super-2 number, since 2×131572171301771² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131572171321771) 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, 2268485712071 + ... + 2268485712128.

It is an arithmetic number, because the mean of its divisors is an integer number (34027285681500).

Almost surely, 2^{131572171301771} is an apocalyptic number.

131572171301771 is a deficient number, since it is larger than the sum of its proper divisors (4536971424229).

131572171301771 is an equidigital number, since it uses as much as digits as its factorization.

131572171301771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4536971424228.

The product of its (nonzero) digits is 216090, while the sum is 47.

The spelling of 131572171301771 in words is "one hundred thirty-one trillion, five hundred seventy-two billion, one hundred seventy-one million, three hundred one thousand, seven hundred seventy-one".