1213300000 has 144 divisors (see below), whose sum is σ = 3260041344. Its totient is φ = 440800000.

The previous prime is 1213299973. The next prime is 1213300019. The reversal of 1213300000 is 33121.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a self number, because there is not a number n which added to its sum of digits gives 1213300000.

It is a congruent number.

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, 1099449 + ... + 1100551.

It is an arithmetic number, because the mean of its divisors is an integer number (22639176).

Almost surely, 2^1213300000 is an apocalyptic number.

1213300000 is a gapful number since it is divisible by the number (10) 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 1213300000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1630020672).

1213300000 is an abundant number, since it is smaller than the sum of its proper divisors (2046741344).

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

1213300000 is an equidigital number, since it uses as much as digits as its factorization.

1213300000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149 (or 1121 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 1213300000 is about 34832.4561293056. The cubic root of 1213300000 is about 1066.5700867417.

Adding to 1213300000 its reverse (33121), we get a palindrome (1213333121).

The spelling of 1213300000 in words is "one billion, two hundred thirteen million, three hundred thousand".