131379109 has 2 divisors, whose sum is σ = 131379110. Its totient is φ = 131379108.

The previous prime is 131379089. The next prime is 131379121. The reversal of 131379109 is 901973131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126495009 + 4884100 = 11247^2 + 2210^2 .

It is a cyclic number.

It is not a de Polignac number, because 131379109 - 2²⁵ = 97824677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131371109) 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, 65689554 + 65689555.

It is an arithmetic number, because the mean of its divisors is an integer number (65689555).

Almost surely, 2^131379109 is an apocalyptic number.

It is an amenable number.

131379109 is a deficient number, since it is larger than the sum of its proper divisors (1).

131379109 is an equidigital number, since it uses as much as digits as its factorization.

131379109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5103, while the sum is 34.

The square root of 131379109 is about 11462.0726310733. The cubic root of 131379109 is about 508.3647598834.

The spelling of 131379109 in words is "one hundred thirty-one million, three hundred seventy-nine thousand, one hundred nine".