1213313 has 8 divisors (see below), whose sum is σ = 1259496. Its totient is φ = 1168000.

The previous prime is 1213301. The next prime is 1213327. The reversal of 1213313 is 3133121.

It can be written as a sum of positive squares in 4 ways, for example, as 478864 + 734449 = 692^2 + 857^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1213313 - 2⁸ = 1213057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213213) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3995 + ... + 4287.

It is an arithmetic number, because the mean of its divisors is an integer number (157437).

2^1213313 is an apocalyptic number.

It is an amenable number.

1213313 is a deficient number, since it is larger than the sum of its proper divisors (46183).

1213313 is a wasteful number, since it uses less digits than its factorization.

1213313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435.

The product of its digits is 54, while the sum is 14.

The square root of 1213313 is about 1101.5048796987. The cubic root of 1213313 is about 106.6573896012.

Adding to 1213313 its reverse (3133121), we get a palindrome (4346434).

The spelling of 1213313 in words is "one million, two hundred thirteen thousand, three hundred thirteen".