131320393447 has 2 divisors, whose sum is σ = 131320393448. Its totient is φ = 131320393446.

The previous prime is 131320393411. The next prime is 131320393453. The reversal of 131320393447 is 744393023131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131320393447 - 2⁷ = 131320393319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131320393147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65660196723 + 65660196724.

It is an arithmetic number, because the mean of its divisors is an integer number (65660196724).

Almost surely, 2^131320393447 is an apocalyptic number.

131320393447 is a deficient number, since it is larger than the sum of its proper divisors (1).

131320393447 is an equidigital number, since it uses as much as digits as its factorization.

131320393447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 40.

The spelling of 131320393447 in words is "one hundred thirty-one billion, three hundred twenty million, three hundred ninety-three thousand, four hundred forty-seven".