131658937 has 2 divisors, whose sum is σ = 131658938. Its totient is φ = 131658936.

The previous prime is 131658911. The next prime is 131659001. The reversal of 131658937 is 739856131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129299641 + 2359296 = 11371^2 + 1536^2 .

It is a cyclic number.

It is not a de Polignac number, because 131658937 - 2¹⁵ = 131626169 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131658893 and 131658902.

It is not a weakly prime, because it can be changed into another prime (131656937) 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 as a sum of consecutive naturals, namely, 65829468 + 65829469.

It is an arithmetic number, because the mean of its divisors is an integer number (65829469).

Almost surely, 2^131658937 is an apocalyptic number.

It is an amenable number.

131658937 is a deficient number, since it is larger than the sum of its proper divisors (1).

131658937 is an equidigital number, since it uses as much as digits as its factorization.

131658937 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 43.

The square root of 131658937 is about 11474.2728309902. The cubic root of 131658937 is about 508.7254306603.

The spelling of 131658937 in words is "one hundred thirty-one million, six hundred fifty-eight thousand, nine hundred thirty-seven".