1311468215 has 4 divisors (see below), whose sum is σ = 1573761864. Its totient is φ = 1049174568.

The previous prime is 1311468209. The next prime is 1311468229. The reversal of 1311468215 is 5128641131.

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 1311468215 - 2²² = 1307273911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131146817 + ... + 131146826.

It is an arithmetic number, because the mean of its divisors is an integer number (393440466).

Almost surely, 2^1311468215 is an apocalyptic number.

1311468215 is a deficient number, since it is larger than the sum of its proper divisors (262293649).

1311468215 is an equidigital number, since it uses as much as digits as its factorization.

1311468215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262293648.

The product of its digits is 5760, while the sum is 32.

The square root of 1311468215 is about 36214.1990799189. The cubic root of 1311468215 is about 1094.5928067649.

The spelling of 1311468215 in words is "one billion, three hundred eleven million, four hundred sixty-eight thousand, two hundred fifteen".