1216353 has 8 divisors (see below), whose sum is σ = 1627648. Its totient is φ = 807984.

The previous prime is 1216351. The next prime is 1216373. The reversal of 1216353 is 3536121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1216353 - 2¹ = 1216351 is a prime.

It is a Duffinian number.

1216353 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1216351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 576 + ... + 1662.

It is an arithmetic number, because the mean of its divisors is an integer number (203456).

2^1216353 is an apocalyptic number.

It is an amenable number.

1216353 is a deficient number, since it is larger than the sum of its proper divisors (411295).

1216353 is a wasteful number, since it uses less digits than its factorization.

1216353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1463.

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

The square root of 1216353 is about 1102.8839467505. The cubic root of 1216353 is about 106.7463933025.

The spelling of 1216353 in words is "one million, two hundred sixteen thousand, three hundred fifty-three".