1311143315 has 8 divisors (see below), whose sum is σ = 1609962288. Its totient is φ = 1024521120.

The previous prime is 1311143303. The next prime is 1311143399. The reversal of 1311143315 is 5133411131.

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

It is not a de Polignac number, because 1311143315 - 2²⁰ = 1310094739 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3048956 + ... + 3049385.

It is an arithmetic number, because the mean of its divisors is an integer number (201245286).

Almost surely, 2^1311143315 is an apocalyptic number.

1311143315 is a deficient number, since it is larger than the sum of its proper divisors (298818973).

1311143315 is an equidigital number, since it uses as much as digits as its factorization.

1311143315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6098389.

The product of its digits is 540, while the sum is 23.

The square root of 1311143315 is about 36209.7129925107. The cubic root of 1311143315 is about 1094.5024086978.

Adding to 1311143315 its reverse (5133411131), we get a palindrome (6444554446).

The spelling of 1311143315 in words is "one billion, three hundred eleven million, one hundred forty-three thousand, three hundred fifteen".