131924491 has 2 divisors, whose sum is σ = 131924492. Its totient is φ = 131924490.

The previous prime is 131924477. The next prime is 131924497. The reversal of 131924491 is 194429131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131924491 - 2⁵ = 131924459 is a prime.

It is not a weakly prime, because it can be changed into another prime (131924497) 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, 65962245 + 65962246.

It is an arithmetic number, because the mean of its divisors is an integer number (65962246).

Almost surely, 2^131924491 is an apocalyptic number.

131924491 is a deficient number, since it is larger than the sum of its proper divisors (1).

131924491 is an equidigital number, since it uses as much as digits as its factorization.

131924491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 34.

The square root of 131924491 is about 11485.8387155662. The cubic root of 131924491 is about 509.0672313518.

The spelling of 131924491 in words is "one hundred thirty-one million, nine hundred twenty-four thousand, four hundred ninety-one".