1213020103 has 2 divisors, whose sum is σ = 1213020104. Its totient is φ = 1213020102.

The previous prime is 1213020101. The next prime is 1213020113. The reversal of 1213020103 is 3010203121.

It is a weak prime.

It is an emirp because it is prime and its reverse (3010203121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1213020103 - 2¹ = 1213020101 is a prime.

Together with 1213020101, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213020101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606510051 + 606510052.

It is an arithmetic number, because the mean of its divisors is an integer number (606510052).

Almost surely, 2^1213020103 is an apocalyptic number.

1213020103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213020103 is an equidigital number, since it uses as much as digits as its factorization.

1213020103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1213020103 is about 34828.4381360979. The cubic root of 1213020103 is about 1066.4880645085.

Adding to 1213020103 its reverse (3010203121), we get a palindrome (4223223224).

The spelling of 1213020103 in words is "one billion, two hundred thirteen million, twenty thousand, one hundred three".