1311351115 has 8 divisors (see below), whose sum is σ = 1576909440. Its totient is φ = 1046888832.

The previous prime is 1311351071. The next prime is 1311351133. The reversal of 1311351115 is 5111531131.

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

It is a cyclic number.

It is not a de Polignac number, because 1311351115 - 2¹⁵ = 1311318347 is a prime.

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, 271374 + ... + 276163.

It is an arithmetic number, because the mean of its divisors is an integer number (197113680).

Almost surely, 2^1311351115 is an apocalyptic number.

1311351115 is a deficient number, since it is larger than the sum of its proper divisors (265558325).

1311351115 is an equidigital number, since it uses as much as digits as its factorization.

1311351115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548021.

The product of its digits is 225, while the sum is 22.

The square root of 1311351115 is about 36212.5822746735. The cubic root of 1311351115 is about 1094.5602273420.

Adding to 1311351115 its reverse (5111531131), we get a palindrome (6422882246).

The spelling of 1311351115 in words is "one billion, three hundred eleven million, three hundred fifty-one thousand, one hundred fifteen".