131240571 has 24 divisors (see below), whose sum is σ = 222064704. Its totient is φ = 68176080.

The previous prime is 131240569. The next prime is 131240609. The reversal of 131240571 is 175042131.

It is not a de Polignac number, because 131240571 - 2¹ = 131240569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131240521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38965 + ... + 42198.

It is an arithmetic number, because the mean of its divisors is an integer number (9252696).

Almost surely, 2^131240571 is an apocalyptic number.

131240571 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

131240571 is a deficient number, since it is larger than the sum of its proper divisors (90824133).

131240571 is a wasteful number, since it uses less digits than its factorization.

131240571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81191 (or 81184 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 131240571 is about 11456.0277147011. The cubic root of 131240571 is about 508.1860084636.

The spelling of 131240571 in words is "one hundred thirty-one million, two hundred forty thousand, five hundred seventy-one".