1213103027 has 2 divisors, whose sum is σ = 1213103028. Its totient is φ = 1213103026.

The previous prime is 1213103009. The next prime is 1213103029. The reversal of 1213103027 is 7203013121.

It is a strong prime.

It is an emirp because it is prime and its reverse (7203013121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1213103027 - 2⁸ = 1213102771 is a prime.

Together with 1213103029, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1213103029) 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 as a sum of consecutive naturals, namely, 606551513 + 606551514.

It is an arithmetic number, because the mean of its divisors is an integer number (606551514).

Almost surely, 2^1213103027 is an apocalyptic number.

1213103027 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213103027 is an equidigital number, since it uses as much as digits as its factorization.

1213103027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 1213103027 is about 34829.6285797021. The cubic root of 1213103027 is about 1066.5123662330.

Adding to 1213103027 its reverse (7203013121), we get a palindrome (8416116148).

The spelling of 1213103027 in words is "one billion, two hundred thirteen million, one hundred three thousand, twenty-seven".