131699943 has 12 divisors (see below), whose sum is σ = 190605168. Its totient is φ = 87628320.

The previous prime is 131699941. The next prime is 131699947. The reversal of 131699943 is 349996131.

It is not a de Polignac number, because 131699943 - 2¹ = 131699941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131699941) 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 11 ways as a sum of consecutive naturals, for example, 9355 + ... + 18732.

It is an arithmetic number, because the mean of its divisors is an integer number (15883764).

Almost surely, 2^131699943 is an apocalyptic number.

131699943 is a deficient number, since it is larger than the sum of its proper divisors (58905225).

131699943 is a wasteful number, since it uses less digits than its factorization.

131699943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28614 (or 28611 counting only the distinct ones).

The product of its digits is 157464, while the sum is 45.

The square root of 131699943 is about 11476.0595589253. The cubic root of 131699943 is about 508.7782404179.

The spelling of 131699943 in words is "one hundred thirty-one million, six hundred ninety-nine thousand, nine hundred forty-three".