131927693 has 2 divisors, whose sum is σ = 131927694. Its totient is φ = 131927692.

The previous prime is 131927687. The next prime is 131927707. The reversal of 131927693 is 396729131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77492809 + 54434884 = 8803^2 + 7378^2 .

It is an emirp because it is prime and its reverse (396729131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131927693 - 2¹⁸ = 131665549 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 131927693.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131927603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65963846 + 65963847.

It is an arithmetic number, because the mean of its divisors is an integer number (65963847).

Almost surely, 2^131927693 is an apocalyptic number.

It is an amenable number.

131927693 is a deficient number, since it is larger than the sum of its proper divisors (1).

131927693 is an equidigital number, since it uses as much as digits as its factorization.

131927693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61236, while the sum is 41.

The square root of 131927693 is about 11485.9781037576. The cubic root of 131927693 is about 509.0713499201.

The spelling of 131927693 in words is "one hundred thirty-one million, nine hundred twenty-seven thousand, six hundred ninety-three".