131775727 has 2 divisors, whose sum is σ = 131775728. Its totient is φ = 131775726.

The previous prime is 131775719. The next prime is 131775781. The reversal of 131775727 is 727577131.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (727577131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131775727 - 2³ = 131775719 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131775727.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131175727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65887863 + 65887864.

It is an arithmetic number, because the mean of its divisors is an integer number (65887864).

Almost surely, 2^131775727 is an apocalyptic number.

131775727 is a deficient number, since it is larger than the sum of its proper divisors (1).

131775727 is an equidigital number, since it uses as much as digits as its factorization.

131775727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72030, while the sum is 40.

The square root of 131775727 is about 11479.3609142670. The cubic root of 131775727 is about 508.8758103333.

The spelling of 131775727 in words is "one hundred thirty-one million, seven hundred seventy-five thousand, seven hundred twenty-seven".