131306667773 has 8 divisors (see below), whose sum is σ = 134908420920. Its totient is φ = 127723921920.

The previous prime is 131306667721. The next prime is 131306667787. The reversal of 131306667773 is 377766603131.

It can be written as a sum of positive squares in 4 ways, for example, as 4072324 + 131302595449 = 2018^2 + 362357^2 .

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 131306667773 - 2³² = 127011700477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131306687773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4737818 + ... + 4765451.

It is an arithmetic number, because the mean of its divisors is an integer number (16863552615).

Almost surely, 2^131306667773 is an apocalyptic number.

It is an amenable number.

131306667773 is a deficient number, since it is larger than the sum of its proper divisors (3601753147).

131306667773 is an equidigital number, since it uses as much as digits as its factorization.

131306667773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9503647.

The product of its (nonzero) digits is 2000376, while the sum is 50.

The spelling of 131306667773 in words is "one hundred thirty-one billion, three hundred six million, six hundred sixty-seven thousand, seven hundred seventy-three".