131380809397 has 2 divisors, whose sum is σ = 131380809398. Its totient is φ = 131380809396.

The previous prime is 131380809367. The next prime is 131380809403. The reversal of 131380809397 is 793908083131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116094207076 + 15286602321 = 340726^2 + 123639^2 .

It is a cyclic number.

It is not a de Polignac number, because 131380809397 - 2¹⁵ = 131380776629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131380809367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65690404698 + 65690404699.

It is an arithmetic number, because the mean of its divisors is an integer number (65690404699).

Almost surely, 2^131380809397 is an apocalyptic number.

It is an amenable number.

131380809397 is a deficient number, since it is larger than the sum of its proper divisors (1).

131380809397 is an equidigital number, since it uses as much as digits as its factorization.

131380809397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 52.

The spelling of 131380809397 in words is "one hundred thirty-one billion, three hundred eighty million, eight hundred nine thousand, three hundred ninety-seven".