1320233100 has 36 divisors (see below), whose sum is σ = 3819875304. Its totient is φ = 352062080.

The previous prime is 1320233099. The next prime is 1320233111. The reversal of 1320233100 is 13320231.

It is a super-2 number, since 2×1320233100² = 3486030876671220000, which contains 22 as substring.

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 1320233100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2200089 + ... + 2200688.

Almost surely, 2^1320233100 is an apocalyptic number.

1320233100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320233100 is an abundant number, since it is smaller than the sum of its proper divisors (2499642204).

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

1320233100 is a wasteful number, since it uses less digits than its factorization.

1320233100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4400794 (or 4400787 counting only the distinct ones).

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

The square root of 1320233100 is about 36335.0120407301. The cubic root of 1320233100 is about 1097.0258778177.

Adding to 1320233100 its reverse (13320231), we get a palindrome (1333553331).

The spelling of 1320233100 in words is "one billion, three hundred twenty million, two hundred thirty-three thousand, one hundred".