1311234204 has 96 divisors (see below), whose sum is σ = 3576545280. Its totient is φ = 366133248.

The previous prime is 1311234203. The next prime is 1311234269. The reversal of 1311234204 is 4024321131.

1311234204 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 31 ways as a sum of consecutive naturals, for example, 1704732 + ... + 1705500.

It is an arithmetic number, because the mean of its divisors is an integer number (37255680).

Almost surely, 2^1311234204 is an apocalyptic number.

1311234204 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1311234204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1788272640).

1311234204 is an abundant number, since it is smaller than the sum of its proper divisors (2265311076).

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

1311234204 is a wasteful number, since it uses less digits than its factorization.

1311234204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1219 (or 1217 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1311234204 is about 36210.9680069451. The cubic root of 1311234204 is about 1094.5276985675.

Adding to 1311234204 its reverse (4024321131), we get a palindrome (5335555335).

The spelling of 1311234204 in words is "one billion, three hundred eleven million, two hundred thirty-four thousand, two hundred four".