1230565217 has 4 divisors (see below), whose sum is σ = 1406360256. Its totient is φ = 1054770180.

The previous prime is 1230565211. The next prime is 1230565241. The reversal of 1230565217 is 7125650321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1230565217 - 2³⁰ = 156823393 is a prime.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87897509 + ... + 87897522.

It is an arithmetic number, because the mean of its divisors is an integer number (351590064).

Almost surely, 2^1230565217 is an apocalyptic number.

It is an amenable number.

1230565217 is a deficient number, since it is larger than the sum of its proper divisors (175795039).

1230565217 is an equidigital number, since it uses as much as digits as its factorization.

1230565217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175795038.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 1230565217 is about 35079.4130082018. The cubic root of 1230565217 is about 1071.6053629377.

The spelling of 1230565217 in words is "one billion, two hundred thirty million, five hundred sixty-five thousand, two hundred seventeen".