131520571 has 16 divisors (see below), whose sum is σ = 162475264. Its totient is φ = 103672224.

The previous prime is 131520563. The next prime is 131520577. The reversal of 131520571 is 175025131.

It is a cyclic number.

It is not a de Polignac number, because 131520571 - 2³ = 131520563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131520577) 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 15 ways as a sum of consecutive naturals, for example, 23200 + ... + 28306.

It is an arithmetic number, because the mean of its divisors is an integer number (10154704).

Almost surely, 2^131520571 is an apocalyptic number.

131520571 is a deficient number, since it is larger than the sum of its proper divisors (30954693).

131520571 is a wasteful number, since it uses less digits than its factorization.

131520571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5410.

The product of its (nonzero) digits is 1050, while the sum is 25.

The square root of 131520571 is about 11468.2418443282. The cubic root of 131520571 is about 508.5471544322.

The spelling of 131520571 in words is "one hundred thirty-one million, five hundred twenty thousand, five hundred seventy-one".