1213316 has 12 divisors (see below), whose sum is σ = 2286732. Its totient is φ = 559968.

The previous prime is 1213301. The next prime is 1213327. The reversal of 1213316 is 6133121.

It can be written as a sum of positive squares in 2 ways, for example, as 102400 + 1110916 = 320^2 + 1054^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1213294 and 1213303.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11615 + ... + 11718.

It is an arithmetic number, because the mean of its divisors is an integer number (190561).

2^1213316 is an apocalyptic number.

It is an amenable number.

1213316 is a deficient number, since it is larger than the sum of its proper divisors (1073416).

1213316 is a wasteful number, since it uses less digits than its factorization.

1213316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23350 (or 23348 counting only the distinct ones).

The product of its digits is 108, while the sum is 17.

The square root of 1213316 is about 1101.5062414712. The cubic root of 1213316 is about 106.6574775070.

Adding to 1213316 its reverse (6133121), we get a palindrome (7346437).

The spelling of 1213316 in words is "one million, two hundred thirteen thousand, three hundred sixteen".