1305012300 has 72 divisors (see below), whose sum is σ = 3782122512. Its totient is φ = 347424000.

The previous prime is 1305012299. The next prime is 1305012337. The reversal of 1305012300 is 32105031.

It is a happy number.

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 1305012300.

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, 195010 + ... + 201590.

Almost surely, 2^1305012300 is an apocalyptic number.

1305012300 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 1305012300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1891061256).

1305012300 is an abundant number, since it is smaller than the sum of its proper divisors (2477110212).

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

1305012300 is a wasteful number, since it uses less digits than its factorization.

1305012300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7259 (or 7252 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 1305012300 is about 36124.9539792094. The cubic root of 1305012300 is about 1092.7937479322.

Adding to 1305012300 its reverse (32105031), we get a palindrome (1337117331).

The spelling of 1305012300 in words is "one billion, three hundred five million, twelve thousand, three hundred".