1320351 has 8 divisors (see below), whose sum is σ = 1784880. Its totient is φ = 868032.

The previous prime is 1320343. The next prime is 1320353. The reversal of 1320351 is 1530231.

It is a happy number.

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

It is not a de Polignac number, because 1320351 - 2³ = 1320343 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1320351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320353) 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, 2796 + ... + 3233.

It is an arithmetic number, because the mean of its divisors is an integer number (223110).

2^1320351 is an apocalyptic number.

1320351 is a deficient number, since it is larger than the sum of its proper divisors (464529).

1320351 is an equidigital number, since it uses as much as digits as its factorization.

1320351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6105.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 1320351 is about 1149.0652722974. The cubic root of 1320351 is about 109.7058532531.

Adding to 1320351 its reverse (1530231), we get a palindrome (2850582).

The spelling of 1320351 in words is "one million, three hundred twenty thousand, three hundred fifty-one".