131657703939 has 16 divisors (see below), whose sum is σ = 195239527840. Its totient is φ = 87685817760.

The previous prime is 131657703871. The next prime is 131657703953. The reversal of 131657703939 is 939307756131.

131657703939 is a `hidden beast` number, since 1 + 3 + 1 + 6 + 577 + 0 + 39 + 39 = 666.

It is not a de Polignac number, because 131657703939 - 2⁷ = 131657703811 is a prime.

It is a super-2 number, since 2×131657703939² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131657703139) 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 15 ways as a sum of consecutive naturals, for example, 2360392 + ... + 2415525.

It is an arithmetic number, because the mean of its divisors is an integer number (12202470490).

Almost surely, 2^131657703939 is an apocalyptic number.

131657703939 is a deficient number, since it is larger than the sum of its proper divisors (63581823901).

131657703939 is a wasteful number, since it uses less digits than its factorization.

131657703939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4776947 (or 4776941 counting only the distinct ones).

The product of its (nonzero) digits is 3214890, while the sum is 54.

The spelling of 131657703939 in words is "one hundred thirty-one billion, six hundred fifty-seven million, seven hundred three thousand, nine hundred thirty-nine".