131706443 has 8 divisors (see below), whose sum is σ = 144868656. Its totient is φ = 119731920.

The previous prime is 131706427. The next prime is 131706451. The reversal of 131706443 is 344607131.

It is not a de Polignac number, because 131706443 - 2⁴ = 131706427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131706403) 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, 48146 + ... + 50807.

It is an arithmetic number, because the mean of its divisors is an integer number (18108582).

Almost surely, 2^131706443 is an apocalyptic number.

131706443 is a deficient number, since it is larger than the sum of its proper divisors (13162213).

131706443 is an frugal number, since it uses more digits than its factorization.

131706443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98986 (or 98964 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 131706443 is about 11476.3427536825. The cubic root of 131706443 is about 508.7866104650.

The spelling of 131706443 in words is "one hundred thirty-one million, seven hundred six thousand, four hundred forty-three".