1130812308 has 72 divisors (see below), whose sum is σ = 2943780840. Its totient is φ = 365783040.

The previous prime is 1130812301. The next prime is 1130812313. The reversal of 1130812308 is 8032180311.

It can be written as a sum of positive squares in 4 ways, for example, as 307581444 + 823230864 = 17538^2 + 28692^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1130812301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 288828 + ... + 292716.

It is an arithmetic number, because the mean of its divisors is an integer number (40885845).

Almost surely, 2^1130812308 is an apocalyptic number.

1130812308 is a gapful number since it is divisible by the number (18) 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 1130812308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1471890420).

1130812308 is an abundant number, since it is smaller than the sum of its proper divisors (1812968532).

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

1130812308 is a wasteful number, since it uses less digits than its factorization.

1130812308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4137 (or 4132 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 1130812308 is about 33627.5528101585. The cubic root of 1130812308 is about 1041.8299598626.

Adding to 1130812308 its reverse (8032180311), we get a palindrome (9162992619).

The spelling of 1130812308 in words is "one billion, one hundred thirty million, eight hundred twelve thousand, three hundred eight".