1220313300 has 72 divisors (see below), whose sum is σ = 3684305856. Its totient is φ = 311266560.

The previous prime is 1220313223. The next prime is 1220313337. The reversal of 1220313300 is 33130221.

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 1220313300.

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, 81529 + ... + 95328.

Almost surely, 2^1220313300 is an apocalyptic number.

1220313300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220313300 is an abundant number, since it is smaller than the sum of its proper divisors (2463992556).

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

1220313300 is a wasteful number, since it uses less digits than its factorization.

1220313300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176897 (or 176890 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 1220313300 is about 34932.9829817037. The cubic root of 1220313300 is about 1068.6211896330.

Adding to 1220313300 its reverse (33130221), we get a palindrome (1253443521).

The spelling of 1220313300 in words is "one billion, two hundred twenty million, three hundred thirteen thousand, three hundred".