131000143 has 4 divisors (see below), whose sum is σ = 131148720. Its totient is φ = 130851568.

The previous prime is 131000087. The next prime is 131000161. The reversal of 131000143 is 341000131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131000143 is a prime.

It is a super-2 number, since 2×131000143² = 34322074932040898, which contains 22 as substring.

It is a Duffinian number.

131000143 is a modest number, since divided by 143 gives 131 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131000543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72958 + ... + 74731.

It is an arithmetic number, because the mean of its divisors is an integer number (32787180).

Almost surely, 2^131000143 is an apocalyptic number.

131000143 is a deficient number, since it is larger than the sum of its proper divisors (148577).

131000143 is an equidigital number, since it uses as much as digits as its factorization.

131000143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148576.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 131000143 is about 11445.5293892419. The cubic root of 131000143 is about 507.8754926126.

Adding to 131000143 its reverse (341000131), we get a palindrome (472000274).

The spelling of 131000143 in words is "one hundred thirty-one million, one hundred forty-three", and thus it is an aban number.