131118571 has 4 divisors (see below), whose sum is σ = 131314072. Its totient is φ = 130923072.

The previous prime is 131118557. The next prime is 131118587. The reversal of 131118571 is 175811131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 175811131 = 601 ⋅292531.

It is a cyclic number.

It is not a de Polignac number, because 131118571 - 2⁷ = 131118443 is a prime.

It is a super-2 number, since 2×131118571² = 34384159322164082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131118511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96741 + ... + 98086.

It is an arithmetic number, because the mean of its divisors is an integer number (32828518).

Almost surely, 2^131118571 is an apocalyptic number.

131118571 is a deficient number, since it is larger than the sum of its proper divisors (195501).

131118571 is an equidigital number, since it uses as much as digits as its factorization.

131118571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195500.

The product of its digits is 840, while the sum is 28.

The square root of 131118571 is about 11450.7017688874. The cubic root of 131118571 is about 508.0284913340.

The spelling of 131118571 in words is "one hundred thirty-one million, one hundred eighteen thousand, five hundred seventy-one".