131083561 has 8 divisors (see below), whose sum is σ = 151493760. Its totient is φ = 111094368.

The previous prime is 131083543. The next prime is 131083573. The reversal of 131083561 is 165380131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131083561 - 2⁵ = 131083529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131083541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104581 + ... + 105826.

It is an arithmetic number, because the mean of its divisors is an integer number (18936720).

Almost surely, 2^131083561 is an apocalyptic number.

It is an amenable number.

131083561 is a deficient number, since it is larger than the sum of its proper divisors (20410199).

131083561 is an equidigital number, since it uses as much as digits as its factorization.

131083561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210503.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 131083561 is about 11449.1729395621. The cubic root of 131083561 is about 507.9832710406.

The spelling of 131083561 in words is "one hundred thirty-one million, eighty-three thousand, five hundred sixty-one".