1213307 has 8 divisors (see below), whose sum is σ = 1296000. Its totient is φ = 1131904.

The previous prime is 1213301. The next prime is 1213327. The reversal of 1213307 is 7033121.

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 1213307 - 2¹⁰ = 1212283 is a prime.

It is a super-2 number, since 2×1213307² = 2944227752498, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2294 + ... + 2772.

It is an arithmetic number, because the mean of its divisors is an integer number (162000).

2^1213307 is an apocalyptic number.

1213307 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1213307 is a deficient number, since it is larger than the sum of its proper divisors (82693).

1213307 is a wasteful number, since it uses less digits than its factorization.

1213307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645.

The product of its (nonzero) digits is 126, while the sum is 17.

The square root of 1213307 is about 1101.5021561486. The cubic root of 1213307 is about 106.6572137890.

Adding to 1213307 its reverse (7033121), we get a palindrome (8246428).

The spelling of 1213307 in words is "one million, two hundred thirteen thousand, three hundred seven".