131000681 has 8 divisors (see below), whose sum is σ = 150388224. Its totient is φ = 111781440.

The previous prime is 131000677. The next prime is 131000711. The reversal of 131000681 is 186000131.

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

It is a cyclic number.

It is not a de Polignac number, because 131000681 - 2² = 131000677 is a prime.

It is a super-2 number, since 2×131000681² = 34322356844927522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131000641) 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 7 ways as a sum of consecutive naturals, for example, 40400 + ... + 43521.

It is an arithmetic number, because the mean of its divisors is an integer number (18798528).

Almost surely, 2^131000681 is an apocalyptic number.

It is an amenable number.

131000681 is a deficient number, since it is larger than the sum of its proper divisors (19387543).

131000681 is an equidigital number, since it uses as much as digits as its factorization.

131000681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84151.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 131000681 is about 11445.5528918441. The cubic root of 131000681 is about 507.8761878705.

The spelling of 131000681 in words is "one hundred thirty-one million, six hundred eighty-one", and thus it is an aban number.