131424247 has 2 divisors, whose sum is σ = 131424248. Its totient is φ = 131424246.

The previous prime is 131424217. The next prime is 131424257. The reversal of 131424247 is 742424131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131424247 - 2⁷ = 131424119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131424217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65712123 + 65712124.

It is an arithmetic number, because the mean of its divisors is an integer number (65712124).

Almost surely, 2^131424247 is an apocalyptic number.

131424247 is a deficient number, since it is larger than the sum of its proper divisors (1).

131424247 is an equidigital number, since it uses as much as digits as its factorization.

131424247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376, while the sum is 28.

The square root of 131424247 is about 11464.0414775942. The cubic root of 131424247 is about 508.4229729465.

Adding to 131424247 its reverse (742424131), we get a palindrome (873848378).

The spelling of 131424247 in words is "one hundred thirty-one million, four hundred twenty-four thousand, two hundred forty-seven".