27311207 has 24 divisors (see below), whose sum is σ = 35066496. Its totient is φ = 20664000.

The previous prime is 27311203. The next prime is 27311213. The reversal of 27311207 is 70211372.

It is not a de Polignac number, because 27311207 - 2² = 27311203 is a prime.

It is a Smith number, since the sum of its digits (23) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27311203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129332 + ... + 129542.

It is an arithmetic number, because the mean of its divisors is an integer number (1461104).

Almost surely, 2^27311207 is an apocalyptic number.

27311207 is a deficient number, since it is larger than the sum of its proper divisors (7755289).

27311207 is a wasteful number, since it uses less digits than its factorization.

27311207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311 (or 270 counting only the distinct ones).

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 27311207 is about 5226.0125334714. The cubic root of 27311207 is about 301.1482182281.

Adding to 27311207 its reverse (70211372), we get a palindrome (97522579).

The spelling of 27311207 in words is "twenty-seven million, three hundred eleven thousand, two hundred seven".