131313673 has 2 divisors, whose sum is σ = 131313674. Its totient is φ = 131313672.

The previous prime is 131313667. The next prime is 131313697. The reversal of 131313673 is 376313131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129231424 + 2082249 = 11368^2 + 1443^2 .

It is an emirp because it is prime and its reverse (376313131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131313673 - 2¹³ = 131305481 is a prime.

It is not a weakly prime, because it can be changed into another prime (131313643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65656836 + 65656837.

It is an arithmetic number, because the mean of its divisors is an integer number (65656837).

Almost surely, 2^131313673 is an apocalyptic number.

It is an amenable number.

131313673 is a deficient number, since it is larger than the sum of its proper divisors (1).

131313673 is an equidigital number, since it uses as much as digits as its factorization.

131313673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3402, while the sum is 28.

The square root of 131313673 is about 11459.2178179839. The cubic root of 131313673 is about 508.2803454458.

The spelling of 131313673 in words is "one hundred thirty-one million, three hundred thirteen thousand, six hundred seventy-three".