131694505939 has 8 divisors (see below), whose sum is σ = 135951823872. Its totient is φ = 127437757320.

The previous prime is 131694505903. The next prime is 131694505997. The reversal of 131694505939 is 939505496131.

It is a happy number.

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 131694505939 - 2¹⁵ = 131694473171 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131694505939.

It is not an unprimeable number, because it can be changed into a prime (131694506939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 355482 + ... + 624304.

It is an arithmetic number, because the mean of its divisors is an integer number (16993977984).

Almost surely, 2^131694505939 is an apocalyptic number.

131694505939 is a deficient number, since it is larger than the sum of its proper divisors (4257317933).

131694505939 is a wasteful number, since it uses less digits than its factorization.

131694505939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284657.

The product of its (nonzero) digits is 3936600, while the sum is 55.

The spelling of 131694505939 in words is "one hundred thirty-one billion, six hundred ninety-four million, five hundred five thousand, nine hundred thirty-nine".