131443071 has 4 divisors (see below), whose sum is σ = 175257432. Its totient is φ = 87628712.

The previous prime is 131443061. The next prime is 131443073. The reversal of 131443071 is 170344131.

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

It is a cyclic number.

It is not a de Polignac number, because 131443071 - 2¹³ = 131434879 is a prime.

It is a super-2 number, since 2×131443071² = 34554561827822082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131443073) 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, 21907176 + ... + 21907181.

It is an arithmetic number, because the mean of its divisors is an integer number (43814358).

Almost surely, 2^131443071 is an apocalyptic number.

131443071 is a deficient number, since it is larger than the sum of its proper divisors (43814361).

131443071 is an equidigital number, since it uses as much as digits as its factorization.

131443071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43814360.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 131443071 is about 11464.8624501125. The cubic root of 131443071 is about 508.4472457307.

The spelling of 131443071 in words is "one hundred thirty-one million, four hundred forty-three thousand, seventy-one".