1215103 has 2 divisors, whose sum is σ = 1215104. Its totient is φ = 1215102.

The previous prime is 1215083. The next prime is 1215121. The reversal of 1215103 is 3015121.

It is a strong prime.

It is an emirp because it is prime and its reverse (3015121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1215103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1215133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607551 + 607552.

It is an arithmetic number, because the mean of its divisors is an integer number (607552).

2^1215103 is an apocalyptic number.

1215103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1215103 is an equidigital number, since it uses as much as digits as its factorization.

1215103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 1215103 is about 1102.3171050111. The cubic root of 1215103 is about 106.7098143582.

The spelling of 1215103 in words is "one million, two hundred fifteen thousand, one hundred three".