1305351530 has 16 divisors (see below), whose sum is σ = 2685294720. Its totient is φ = 447549072.

The previous prime is 1305351517. The next prime is 1305351557. The reversal of 1305351530 is 351535031.

It is a self number, because there is not a number n which added to its sum of digits gives 1305351530.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9323870 + ... + 9324009.

It is an arithmetic number, because the mean of its divisors is an integer number (167830920).

Almost surely, 2^1305351530 is an apocalyptic number.

1305351530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1305351530 is an abundant number, since it is smaller than the sum of its proper divisors (1379943190).

1305351530 is a wasteful number, since it uses less digits than its factorization.

1305351530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18647893.

The product of its (nonzero) digits is 3375, while the sum is 26.

The square root of 1305351530 is about 36129.6489050198. The cubic root of 1305351530 is about 1092.8884280888. Note that the first 3 decimals are identical.

Adding to 1305351530 its reverse (351535031), we get a palindrome (1656886561).

The spelling of 1305351530 in words is "one billion, three hundred five million, three hundred fifty-one thousand, five hundred thirty".