1320030100 has 36 divisors (see below), whose sum is σ = 2866114300. Its totient is φ = 527708160.

The previous prime is 1320030079. The next prime is 1320030113. The reversal of 1320030100 is 10300231.

It can be written as a sum of positive squares in 6 ways, for example, as 10458756 + 1309571344 = 3234^2 + 36188^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 266446 + ... + 271354.

Almost surely, 2^1320030100 is an apocalyptic number.

1320030100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320030100 is an abundant number, since it is smaller than the sum of its proper divisors (1546084200).

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

1320030100 is a wasteful number, since it uses less digits than its factorization.

1320030100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7612 (or 7605 counting only the distinct ones).

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

The square root of 1320030100 is about 36332.2184844251. The cubic root of 1320030100 is about 1096.9696484371.

Adding to 1320030100 its reverse (10300231), we get a palindrome (1330330331).

The spelling of 1320030100 in words is "one billion, three hundred twenty million, thirty thousand, one hundred".