1311115330 has 64 divisors (see below), whose sum is σ = 2856591360. Its totient is φ = 423244224.

The previous prime is 1311115319. The next prime is 1311115331. The reversal of 1311115330 is 335111131.

It is a super-2 number, since 2×1311115330² = 3438046817122017800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 1311115298 and 1311115307.

It is not an unprimeable number, because it can be changed into a prime (1311115331) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 219159 + ... + 225061.

It is an arithmetic number, because the mean of its divisors is an integer number (44634240).

Almost surely, 2^1311115330 is an apocalyptic number.

1311115330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1311115330 is an abundant number, since it is smaller than the sum of its proper divisors (1545476030).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311115330 is a wasteful number, since it uses less digits than its factorization.

1311115330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6103.

The product of its (nonzero) digits is 135, while the sum is 19.

The square root of 1311115330 is about 36209.3265609843. The cubic root of 1311115330 is about 1094.4946216346.

Adding to 1311115330 its reverse (335111131), we get a palindrome (1646226461).

It can be divided in two parts, 13111 and 15330, that added together give a triangular number (28441 = T₂₃₈).

The spelling of 1311115330 in words is "one billion, three hundred eleven million, one hundred fifteen thousand, three hundred thirty".