1311234200 has 48 divisors (see below), whose sum is σ = 3113506080. Its totient is φ = 513330560.

The previous prime is 1311234181. The next prime is 1311234203. The reversal of 1311234200 is 24321131.

It is a super-3 number, since 3×1311234200³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311234203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60347 + ... + 79146.

It is an arithmetic number, because the mean of its divisors is an integer number (64864710).

Almost surely, 2^1311234200 is an apocalyptic number.

1311234200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1311234200 is an abundant number, since it is smaller than the sum of its proper divisors (1802271880).

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

1311234200 is a wasteful number, since it uses less digits than its factorization.

1311234200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139556 (or 139547 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1311234200 is about 36210.9679517132. The cubic root of 1311234200 is about 1094.5276974546.

Adding to 1311234200 its reverse (24321131), we get a palindrome (1335555331).

The spelling of 1311234200 in words is "one billion, three hundred eleven million, two hundred thirty-four thousand, two hundred".