131321151593 has 2 divisors, whose sum is σ = 131321151594. Its totient is φ = 131321151592.

The previous prime is 131321151587. The next prime is 131321151607. The reversal of 131321151593 is 395151123131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125495188009 + 5825963584 = 354253^2 + 76328^2 .

It is an emirp because it is prime and its reverse (395151123131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131321151593 is a prime.

It is not a weakly prime, because it can be changed into another prime (131321151553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65660575796 + 65660575797.

It is an arithmetic number, because the mean of its divisors is an integer number (65660575797).

Almost surely, 2^131321151593 is an apocalyptic number.

It is an amenable number.

131321151593 is a deficient number, since it is larger than the sum of its proper divisors (1).

131321151593 is an equidigital number, since it uses as much as digits as its factorization.

131321151593 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12150, while the sum is 35.

The spelling of 131321151593 in words is "one hundred thirty-one billion, three hundred twenty-one million, one hundred fifty-one thousand, five hundred ninety-three".