1230015305 has 8 divisors (see below), whose sum is σ = 1476457800. Its totient is φ = 983719296.

The previous prime is 1230015271. The next prime is 1230015307. The reversal of 1230015305 is 5035100321.

It can be written as a sum of positive squares in 4 ways, for example, as 82973881 + 1147041424 = 9109^2 + 33868^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1230015305 - 2²⁸ = 961579849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1230015307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17210 + ... + 52499.

It is an arithmetic number, because the mean of its divisors is an integer number (184557225).

Almost surely, 2^1230015305 is an apocalyptic number.

It is an amenable number.

1230015305 is a deficient number, since it is larger than the sum of its proper divisors (246442495).

1230015305 is an equidigital number, since it uses as much as digits as its factorization.

1230015305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73243.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 1230015305 is about 35071.5740308302. The cubic root of 1230015305 is about 1071.4457136855.

Adding to 1230015305 its reverse (5035100321), we get a palindrome (6265115626).

The spelling of 1230015305 in words is "one billion, two hundred thirty million, fifteen thousand, three hundred five".