123530513 has 8 divisors (see below), whose sum is σ = 125735808. Its totient is φ = 121335984.

The previous prime is 123530503. The next prime is 123530521. The reversal of 123530513 is 315035321.

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 123530513 - 2⁴ = 123530497 is a prime.

It is a super-4 number, since 4×123530513⁴ (a number of 33 digits) contains 4444 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (123530503) 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, 22520 + ... + 27462.

It is an arithmetic number, because the mean of its divisors is an integer number (15716976).

Almost surely, 2^123530513 is an apocalyptic number.

It is an amenable number.

123530513 is a deficient number, since it is larger than the sum of its proper divisors (2205295).

123530513 is an equidigital number, since it uses as much as digits as its factorization.

123530513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5383.

The product of its (nonzero) digits is 1350, while the sum is 23.

The square root of 123530513 is about 11114.4281454333. The cubic root of 123530513 is about 498.0329556208.

Adding to 123530513 its reverse (315035321), we get a palindrome (438565834).

The spelling of 123530513 in words is "one hundred twenty-three million, five hundred thirty thousand, five hundred thirteen".