1215363 has 12 divisors (see below), whose sum is σ = 1667864. Its totient is φ = 787200.

The previous prime is 1215359. The next prime is 1215367. The reversal of 1215363 is 3635121.

It is an interprime number because it is at equal distance from previous prime (1215359) and next prime (1215367).

It is not a de Polignac number, because 1215363 - 2² = 1215359 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 (1215367) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4923 + ... + 5163.

2^1215363 is an apocalyptic number.

1215363 is a deficient number, since it is larger than the sum of its proper divisors (452501).

1215363 is an equidigital number, since it uses as much as digits as its factorization.

1215363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326 (or 285 counting only the distinct ones).

The product of its digits is 540, while the sum is 21.

The square root of 1215363 is about 1102.4350320994. The cubic root of 1215363 is about 106.7174248442.

The spelling of 1215363 in words is "one million, two hundred fifteen thousand, three hundred sixty-three".