1230565215 has 64 divisors (see below), whose sum is σ = 2196933120. Its totient is φ = 583165440.

The previous prime is 1230565211. The next prime is 1230565241. The reversal of 1230565215 is 5125650321.

It is a happy number.

It is not a de Polignac number, because 1230565215 - 2² = 1230565211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230565211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1735281 + ... + 1735989.

It is an arithmetic number, because the mean of its divisors is an integer number (34327080).

Almost surely, 2^1230565215 is an apocalyptic number.

1230565215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1230565215 is a deficient number, since it is larger than the sum of its proper divisors (966367905).

1230565215 is a wasteful number, since it uses less digits than its factorization.

1230565215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 1230565215 is about 35079.4129796951. The cubic root of 1230565215 is about 1071.6053623572.

It can be divided in two parts, 123056 and 5215, that added together give a triangular number (128271 = T₅₀₆).

The spelling of 1230565215 in words is "one billion, two hundred thirty million, five hundred sixty-five thousand, two hundred fifteen".