27031213 has 4 divisors (see below), whose sum is σ = 29488608. Its totient is φ = 24573820.

The previous prime is 27031211. The next prime is 27031223. The reversal of 27031213 is 31213072.

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 a cyclic number.

It is not a de Polignac number, because 27031213 - 2¹ = 27031211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27031211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1228681 + ... + 1228702.

It is an arithmetic number, because the mean of its divisors is an integer number (7372152).

Almost surely, 2^27031213 is an apocalyptic number.

It is an amenable number.

27031213 is a deficient number, since it is larger than the sum of its proper divisors (2457395).

27031213 is a wasteful number, since it uses less digits than its factorization.

27031213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2457394.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 27031213 is about 5199.1550275021. The cubic root of 27031213 is about 300.1155591849.

Adding to 27031213 its reverse (31213072), we get a palindrome (58244285).

It can be divided in two parts, 2703 and 1213, that added together give a triangular number (3916 = T₈₈).

The spelling of 27031213 in words is "twenty-seven million, thirty-one thousand, two hundred thirteen".