27731141 has 2 divisors, whose sum is σ = 27731142. Its totient is φ = 27731140.

The previous prime is 27731113. The next prime is 27731161. The reversal of 27731141 is 14113772.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18671041 + 9060100 = 4321^2 + 3010^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27731141 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 27731141.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27731101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13865570 + 13865571.

It is an arithmetic number, because the mean of its divisors is an integer number (13865571).

Almost surely, 2^27731141 is an apocalyptic number.

It is an amenable number.

27731141 is a deficient number, since it is larger than the sum of its proper divisors (1).

27731141 is an equidigital number, since it uses as much as digits as its factorization.

27731141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1176, while the sum is 26.

The square root of 27731141 is about 5266.0365551333. The cubic root of 27731141 is about 302.6838478983.

It can be divided in two parts, 27731 and 141, that added together give a palindrome (27872).

The spelling of 27731141 in words is "twenty-seven million, seven hundred thirty-one thousand, one hundred forty-one".