27731331241 has 4 divisors (see below), whose sum is σ = 27740966400. Its totient is φ = 27721696084.

The previous prime is 27731331223. The next prime is 27731331259. The reversal of 27731331241 is 14213313772.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (27731331223) and next prime (27731331259).

It is a cyclic number.

It is not a de Polignac number, because 27731331241 - 2²⁵ = 27697776809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27731331197 and 27731331206.

It is not an unprimeable number, because it can be changed into a prime (27731332241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4813261 + ... + 4819018.

It is an arithmetic number, because the mean of its divisors is an integer number (6935241600).

Almost surely, 2^27731331241 is an apocalyptic number.

It is an amenable number.

27731331241 is a deficient number, since it is larger than the sum of its proper divisors (9635159).

27731331241 is an equidigital number, since it uses as much as digits as its factorization.

27731331241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9635158.

The product of its digits is 21168, while the sum is 34.

The spelling of 27731331241 in words is "twenty-seven billion, seven hundred thirty-one million, three hundred thirty-one thousand, two hundred forty-one".