131958611 has 2 divisors, whose sum is σ = 131958612. Its totient is φ = 131958610.

The previous prime is 131958583. The next prime is 131958643. The reversal of 131958611 is 116859131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131958611 is a prime.

It is not a weakly prime, because it can be changed into another prime (131958011) 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, 65979305 + 65979306.

It is an arithmetic number, because the mean of its divisors is an integer number (65979306).

Almost surely, 2^131958611 is an apocalyptic number.

131958611 is a deficient number, since it is larger than the sum of its proper divisors (1).

131958611 is an equidigital number, since it uses as much as digits as its factorization.

131958611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 35.

The square root of 131958611 is about 11487.3239268334. The cubic root of 131958611 is about 509.1111147293. Note that the first 5 decimals are identical.

The spelling of 131958611 in words is "one hundred thirty-one million, nine hundred fifty-eight thousand, six hundred eleven".