1311313215 has 16 divisors (see below), whose sum is σ = 2208528000. Its totient is φ = 662558112.

The previous prime is 1311313183. The next prime is 1311313229. The reversal of 1311313215 is 5123131131.

It is not a de Polignac number, because 1311313215 - 2⁵ = 1311313183 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1311313191 and 1311313200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2300265 + ... + 2300834.

It is an arithmetic number, because the mean of its divisors is an integer number (138033000).

Almost surely, 2^1311313215 is an apocalyptic number.

1311313215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1311313215 is a deficient number, since it is larger than the sum of its proper divisors (897214785).

1311313215 is a wasteful number, since it uses less digits than its factorization.

1311313215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4601126.

The product of its digits is 270, while the sum is 21.

The square root of 1311313215 is about 36212.0589721159. The cubic root of 1311313215 is about 1094.5496824335.

Adding to 1311313215 its reverse (5123131131), we get a palindrome (6434444346).

The spelling of 1311313215 in words is "one billion, three hundred eleven million, three hundred thirteen thousand, two hundred fifteen".