123020113 has 2 divisors, whose sum is σ = 123020114.
Its totient is φ = 123020112.
The previous prime is 123020101. The next prime is 123020167. The reversal of 123020113 is 311020321.
Adding to 123020113 its reverse (311020321), we get a palindrome (434040434).
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 80874049 + 42146064 = 8993^2 + 6492^2
It is a cyclic number.
It is not a de Polignac number, because 123020113 - 29 = 123019601 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 123020093 and 123020102.
It is not a weakly prime, because it can be changed into another prime (123020173) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61510056 + 61510057.
It is an arithmetic number, because the mean of its divisors is an integer number (61510057).
Almost surely, 2123020113 is an apocalyptic number.
It is an amenable number.
123020113 is a deficient number, since it is larger than the sum of its proper divisors (1).
123020113 is an equidigital number, since it uses as much as digits as its factorization.
123020113 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 36, while the sum is 13.
The square root of 123020113 is about 11091.4432334120.
The cubic root of 123020113 is about 497.3460891034.
The spelling of 123020113 in words is "one hundred twenty-three million, twenty thousand, one hundred thirteen".