1230513217 has 4 divisors (see below), whose sum is σ = 1230585136. Its totient is φ = 1230441300.

The previous prime is 1230513209. The next prime is 1230513247. The reversal of 1230513217 is 7123150321.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1230513217 - 2³ = 1230513209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1230513191 and 1230513200.

It is not an unprimeable number, because it can be changed into a prime (1230513247) 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, 6118 + ... + 49984.

It is an arithmetic number, because the mean of its divisors is an integer number (307646284).

Almost surely, 2^1230513217 is an apocalyptic number.

It is an amenable number.

1230513217 is a deficient number, since it is larger than the sum of its proper divisors (71919).

1230513217 is an equidigital number, since it uses as much as digits as its factorization.

1230513217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71918.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 1230513217 is about 35078.6718249138. The cubic root of 1230513217 is about 1071.5902684475.

Adding to 1230513217 its reverse (7123150321), we get a palindrome (8353663538).

The spelling of 1230513217 in words is "one billion, two hundred thirty million, five hundred thirteen thousand, two hundred seventeen".