131330305397 has 2 divisors, whose sum is σ = 131330305398. Its totient is φ = 131330305396.

The previous prime is 131330305357. The next prime is 131330305439. The reversal of 131330305397 is 793503033131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80704855396 + 50625450001 = 284086^2 + 225001^2 .

It is a cyclic number.

It is not a de Polignac number, because 131330305397 - 2⁶ = 131330305333 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131330305397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131330305357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65665152698 + 65665152699.

It is an arithmetic number, because the mean of its divisors is an integer number (65665152699).

Almost surely, 2^131330305397 is an apocalyptic number.

It is an amenable number.

131330305397 is a deficient number, since it is larger than the sum of its proper divisors (1).

131330305397 is an equidigital number, since it uses as much as digits as its factorization.

131330305397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 76545, while the sum is 38.

The spelling of 131330305397 in words is "one hundred thirty-one billion, three hundred thirty million, three hundred five thousand, three hundred ninety-seven".