131425439 has 2 divisors, whose sum is σ = 131425440. Its totient is φ = 131425438.

The previous prime is 131425403. The next prime is 131425457. The reversal of 131425439 is 934524131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131425439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131425339) 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, 65712719 + 65712720.

It is an arithmetic number, because the mean of its divisors is an integer number (65712720).

Almost surely, 2^131425439 is an apocalyptic number.

131425439 is a deficient number, since it is larger than the sum of its proper divisors (1).

131425439 is an equidigital number, since it uses as much as digits as its factorization.

131425439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 32.

The square root of 131425439 is about 11464.0934661228. The cubic root of 131425439 is about 508.4245100509.

It can be divided in two parts, 13142 and 5439, that added together give a palindrome (18581).

The spelling of 131425439 in words is "one hundred thirty-one million, four hundred twenty-five thousand, four hundred thirty-nine".