131506673 has 2 divisors, whose sum is σ = 131506674. Its totient is φ = 131506672.

The previous prime is 131506651. The next prime is 131506699. The reversal of 131506673 is 376605131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119617969 + 11888704 = 10937^2 + 3448^2 .

It is a cyclic number.

It is not a de Polignac number, because 131506673 - 2¹² = 131502577 is a prime.

It is not a weakly prime, because it can be changed into another prime (131506603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65753336 + 65753337.

It is an arithmetic number, because the mean of its divisors is an integer number (65753337).

Almost surely, 2^131506673 is an apocalyptic number.

It is an amenable number.

131506673 is a deficient number, since it is larger than the sum of its proper divisors (1).

131506673 is an equidigital number, since it uses as much as digits as its factorization.

131506673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 131506673 is about 11467.6358941152. The cubic root of 131506673 is about 508.5292407901.

The spelling of 131506673 in words is "one hundred thirty-one million, five hundred six thousand, six hundred seventy-three".