131096491 has 2 divisors, whose sum is σ = 131096492. Its totient is φ = 131096490.

The previous prime is 131096477. The next prime is 131096531. The reversal of 131096491 is 194690131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131096491 - 2⁷ = 131096363 is a prime.

It is not a weakly prime, because it can be changed into another prime (131096411) 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, 65548245 + 65548246.

It is an arithmetic number, because the mean of its divisors is an integer number (65548246).

Almost surely, 2^131096491 is an apocalyptic number.

131096491 is a deficient number, since it is larger than the sum of its proper divisors (1).

131096491 is an equidigital number, since it uses as much as digits as its factorization.

131096491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 131096491 is about 11449.7375952465. The cubic root of 131096491 is about 507.9999728749. Note that the first 4 decimals are identical.

It can be divided in two parts, 13109 and 6491, that added together give a square (19600 = 140²).

The spelling of 131096491 in words is "one hundred thirty-one million, ninety-six thousand, four hundred ninety-one".