131711893 has 2 divisors, whose sum is σ = 131711894. Its totient is φ = 131711892.

The previous prime is 131711891. The next prime is 131711917. The reversal of 131711893 is 398117131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108305649 + 23406244 = 10407^2 + 4838^2 .

It is a cyclic number.

It is not a de Polignac number, because 131711893 - 2¹ = 131711891 is a prime.

Together with 131711891, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131711891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65855946 + 65855947.

It is an arithmetic number, because the mean of its divisors is an integer number (65855947).

Almost surely, 2^131711893 is an apocalyptic number.

It is an amenable number.

131711893 is a deficient number, since it is larger than the sum of its proper divisors (1).

131711893 is an equidigital number, since it uses as much as digits as its factorization.

131711893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 34.

The square root of 131711893 is about 11476.5801962083. The cubic root of 131711893 is about 508.7936282153.

The spelling of 131711893 in words is "one hundred thirty-one million, seven hundred eleven thousand, eight hundred ninety-three".