613123 has 4 divisors (see below), whose sum is σ = 700720.
Its totient is φ = 525528.
The previous prime is 613099. The next prime is 613141. The reversal of 613123 is 321316.
Adding to 613123 its reverse (321316), we get a palindrome (934439).
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 613123 - 29 = 612611 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 613097 and 613106.
It is not an unprimeable number, because it can be changed into a prime (613153) 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, 43788 + ... + 43801.
It is an arithmetic number, because the mean of its divisors is an integer number (175180).
2613123 is an apocalyptic number.
613123 is a deficient number, since it is larger than the sum of its proper divisors (87597).
613123 is an equidigital number, since it uses as much as digits as its factorization.
613123 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 87596.
The product of its digits is 108, while the sum is 16.
The square root of 613123 is about 783.0217110655.
The cubic root of 613123 is about 84.9537464616.
The spelling of 613123 in words is "six hundred thirteen thousand, one hundred twenty-three".