131983069817 has 4 divisors (see below), whose sum is σ = 132350711040. Its totient is φ = 131615428596.

The previous prime is 131983069793. The next prime is 131983069819. The reversal of 131983069817 is 718960389131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131983069817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131983069819) 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 3 ways as a sum of consecutive naturals, for example, 183820073 + ... + 183820790.

It is an arithmetic number, because the mean of its divisors is an integer number (33087677760).

Almost surely, 2^131983069817 is an apocalyptic number.

It is an amenable number.

131983069817 is a deficient number, since it is larger than the sum of its proper divisors (367641223).

131983069817 is an equidigital number, since it uses as much as digits as its factorization.

131983069817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367641222.

The product of its (nonzero) digits is 1959552, while the sum is 56.

The spelling of 131983069817 in words is "one hundred thirty-one billion, nine hundred eighty-three million, sixty-nine thousand, eight hundred seventeen".