27731331223 has 2 divisors, whose sum is σ = 27731331224. Its totient is φ = 27731331222.

The previous prime is 27731331203. The next prime is 27731331259. The reversal of 27731331223 is 32213313772.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27731331223 - 2⁵ = 27731331191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27731331203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13865665611 + 13865665612.

It is an arithmetic number, because the mean of its divisors is an integer number (13865665612).

Almost surely, 2^27731331223 is an apocalyptic number.

27731331223 is a deficient number, since it is larger than the sum of its proper divisors (1).

27731331223 is an equidigital number, since it uses as much as digits as its factorization.

27731331223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31752, while the sum is 34.

Adding to 27731331223 its reverse (32213313772), we get a palindrome (59944644995).

The spelling of 27731331223 in words is "twenty-seven billion, seven hundred thirty-one million, three hundred thirty-one thousand, two hundred twenty-three".