1311133200 has 120 divisors (see below), whose sum is σ = 4523127168. Its totient is φ = 322736640.

The previous prime is 1311133163. The next prime is 1311133231. The reversal of 1311133200 is 23311131.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1311133200.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26424 + ... + 57623.

Almost surely, 2^1311133200 is an apocalyptic number.

1311133200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1311133200 is an abundant number, since it is smaller than the sum of its proper divisors (3211993968).

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

1311133200 is a wasteful number, since it uses less digits than its factorization.

1311133200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84081 (or 84070 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 1311133200 is about 36209.5733197728. The cubic root of 1311133200 is about 1094.4995941262.

Adding to 1311133200 its reverse (23311131), we get a palindrome (1334444331).

The spelling of 1311133200 in words is "one billion, three hundred eleven million, one hundred thirty-three thousand, two hundred".