131332393 has 2 divisors, whose sum is σ = 131332394. Its totient is φ = 131332392.

The previous prime is 131332391. The next prime is 131332423. The reversal of 131332393 is 393233131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114126489 + 17205904 = 10683^2 + 4148^2 .

It is an emirp because it is prime and its reverse (393233131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131332393 - 2¹ = 131332391 is a prime.

It is a super-2 number, since 2×131332393² = 34496394902212898, which contains 22 as substring.

Together with 131332391, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (131332391) 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, 65666196 + 65666197.

It is an arithmetic number, because the mean of its divisors is an integer number (65666197).

Almost surely, 2^131332393 is an apocalyptic number.

It is an amenable number.

131332393 is a deficient number, since it is larger than the sum of its proper divisors (1).

131332393 is an equidigital number, since it uses as much as digits as its factorization.

131332393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4374, while the sum is 28.

The square root of 131332393 is about 11460.0345985516. The cubic root of 131332393 is about 508.3044976805.

The spelling of 131332393 in words is "one hundred thirty-one million, three hundred thirty-two thousand, three hundred ninety-three".