131705593 has 2 divisors, whose sum is σ = 131705594. Its totient is φ = 131705592.

The previous prime is 131705591. The next prime is 131705633. The reversal of 131705593 is 395507131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113998329 + 17707264 = 10677^2 + 4208^2 .

It is a cyclic number.

It is not a de Polignac number, because 131705593 - 2¹ = 131705591 is a prime.

Together with 131705591, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (131705591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65852796 + 65852797.

It is an arithmetic number, because the mean of its divisors is an integer number (65852797).

Almost surely, 2^131705593 is an apocalyptic number.

It is an amenable number.

131705593 is a deficient number, since it is larger than the sum of its proper divisors (1).

131705593 is an equidigital number, since it uses as much as digits as its factorization.

131705593 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14175, while the sum is 34.

The square root of 131705593 is about 11476.3057209191. The cubic root of 131705593 is about 508.7855159360.

The spelling of 131705593 in words is "one hundred thirty-one million, seven hundred five thousand, five hundred ninety-three".