131420491 has 2 divisors, whose sum is σ = 131420492. Its totient is φ = 131420490.

The previous prime is 131420467. The next prime is 131420521. The reversal of 131420491 is 194024131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131420491 - 2⁷ = 131420363 is a prime.

It is not a weakly prime, because it can be changed into another prime (131420441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65710245 + 65710246.

It is an arithmetic number, because the mean of its divisors is an integer number (65710246).

Almost surely, 2^131420491 is an apocalyptic number.

131420491 is a deficient number, since it is larger than the sum of its proper divisors (1).

131420491 is an equidigital number, since it uses as much as digits as its factorization.

131420491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 131420491 is about 11463.8776598497. The cubic root of 131420491 is about 508.4181294596.

The spelling of 131420491 in words is "one hundred thirty-one million, four hundred twenty thousand, four hundred ninety-one".