1312313215 has 16 divisors (see below), whose sum is σ = 1683609408. Its totient is φ = 978494976.

The previous prime is 1312313209. The next prime is 1312313237. The reversal of 1312313215 is 5123132131.

It is not a de Polignac number, because 1312313215 - 2¹¹ = 1312311167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66192 + ... + 83701.

It is an arithmetic number, because the mean of its divisors is an integer number (105225588).

Almost surely, 2^1312313215 is an apocalyptic number.

1312313215 is a deficient number, since it is larger than the sum of its proper divisors (371296193).

1312313215 is a wasteful number, since it uses less digits than its factorization.

1312313215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150018.

The product of its digits is 540, while the sum is 22.

The square root of 1312313215 is about 36225.8638958410. The cubic root of 1312313215 is about 1094.8278441916.

Adding to 1312313215 its reverse (5123132131), we get a palindrome (6435445346).

The spelling of 1312313215 in words is "one billion, three hundred twelve million, three hundred thirteen thousand, two hundred fifteen".