131457483871081 has 3 divisors (see below), whose sum is σ = 131457495336573. Its totient is φ = 131457472405590.

The previous prime is 131457483871037. The next prime is 131457483871099. The reversal of 131457483871081 is 180178384754131.

The square root of 131457483871081 is 11465491.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 131457483871081 - 2¹⁹ = 131457483346793 is a prime.

It is a super-2 number, since 2×131457483871081² (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 (131457483871031) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5732746 + ... + 17198236.

It is an arithmetic number, because the mean of its divisors is an integer number (43819165112191).

Almost surely, 2^{131457483871081} is an apocalyptic number.

131457483871081 is the 11465491-st square number.

131457483871081 is the 5732746-th centered octagonal number.

It is an amenable number.

131457483871081 is a deficient number, since it is larger than the sum of its proper divisors (11465492).

131457483871081 is an frugal number, since it uses more digits than its factorization.

131457483871081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22930982 (or 11465491 counting only the distinct ones).

The product of its (nonzero) digits is 18063360, while the sum is 61.

The spelling of 131457483871081 in words is "one hundred thirty-one trillion, four hundred fifty-seven billion, four hundred eighty-three million, eight hundred seventy-one thousand, eighty-one".