1230513 has 4 divisors (see below), whose sum is σ = 1640688. Its totient is φ = 820340.

The previous prime is 1230491. The next prime is 1230521. The reversal of 1230513 is 3150321.

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.

It is a cyclic number.

It is not a de Polignac number, because 1230513 - 2¹⁰ = 1229489 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 1230492 and 1230501.

It is not an unprimeable number, because it can be changed into a prime (1230013) 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, 205083 + ... + 205088.

It is an arithmetic number, because the mean of its divisors is an integer number (410172).

2^1230513 is an apocalyptic number.

It is an amenable number.

1230513 is a deficient number, since it is larger than the sum of its proper divisors (410175).

1230513 is an equidigital number, since it uses as much as digits as its factorization.

1230513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410174.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 1230513 is about 1109.2849047923. The cubic root of 1230513 is about 107.1590205456.

Adding to 1230513 its reverse (3150321), we get a palindrome (4380834).

The spelling of 1230513 in words is "one million, two hundred thirty thousand, five hundred thirteen".