131345789 has 2 divisors, whose sum is σ = 131345790. Its totient is φ = 131345788.

The previous prime is 131345783. The next prime is 131345807. The reversal of 131345789 is 987543131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131285764 + 60025 = 11458^2 + 245^2 .

It is a cyclic number.

It is not a de Polignac number, because 131345789 - 2²⁰ = 130297213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131345783) 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, 65672894 + 65672895.

It is an arithmetic number, because the mean of its divisors is an integer number (65672895).

Almost surely, 2^131345789 is an apocalyptic number.

It is an amenable number.

131345789 is a deficient number, since it is larger than the sum of its proper divisors (1).

131345789 is an equidigital number, since it uses as much as digits as its factorization.

131345789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 41.

The square root of 131345789 is about 11460.6190495976. The cubic root of 131345789 is about 508.3217795696.

The spelling of 131345789 in words is "one hundred thirty-one million, three hundred forty-five thousand, seven hundred eighty-nine".