1320415315 has 4 divisors (see below), whose sum is σ = 1584498384. Its totient is φ = 1056332248.

The previous prime is 1320415309. The next prime is 1320415331. The reversal of 1320415315 is 5135140231.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1320415315 - 2¹¹ = 1320413267 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1320415315.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132041527 + ... + 132041536.

It is an arithmetic number, because the mean of its divisors is an integer number (396124596).

Almost surely, 2^1320415315 is an apocalyptic number.

1320415315 is a deficient number, since it is larger than the sum of its proper divisors (264083069).

1320415315 is an equidigital number, since it uses as much as digits as its factorization.

1320415315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264083068.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1320415315 is about 36337.5193842398. The cubic root of 1320415315 is about 1097.0763450104.

Adding to 1320415315 its reverse (5135140231), we get a palindrome (6455555546).

The spelling of 1320415315 in words is "one billion, three hundred twenty million, four hundred fifteen thousand, three hundred fifteen".