131420039 has 2 divisors, whose sum is σ = 131420040. Its totient is φ = 131420038.

The previous prime is 131420027. The next prime is 131420063. The reversal of 131420039 is 930024131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131420039 - 2¹² = 131415943 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 131419996 and 131420023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131420339) 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, 65710019 + 65710020.

It is an arithmetic number, because the mean of its divisors is an integer number (65710020).

Almost surely, 2^131420039 is an apocalyptic number.

131420039 is a deficient number, since it is larger than the sum of its proper divisors (1).

131420039 is an equidigital number, since it uses as much as digits as its factorization.

131420039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 131420039 is about 11463.8579457354. The cubic root of 131420039 is about 508.4175465843.

The spelling of 131420039 in words is "one hundred thirty-one million, four hundred twenty thousand, thirty-nine".