123112273 has 2 divisors, whose sum is σ = 123112274. Its totient is φ = 123112272.

The previous prime is 123112271. The next prime is 123112313. The reversal of 123112273 is 372211321.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100340289 + 22771984 = 10017^2 + 4772^2 .

It is an emirp because it is prime and its reverse (372211321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123112273 - 2¹ = 123112271 is a prime.

Together with 123112271, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (123112271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61556136 + 61556137.

It is an arithmetic number, because the mean of its divisors is an integer number (61556137).

Almost surely, 2^123112273 is an apocalyptic number.

It is an amenable number.

123112273 is a deficient number, since it is larger than the sum of its proper divisors (1).

123112273 is an equidigital number, since it uses as much as digits as its factorization.

123112273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 504, while the sum is 22.

The square root of 123112273 is about 11095.5970096250. The cubic root of 123112273 is about 497.4702530129.

Adding to 123112273 its reverse (372211321), we get a palindrome (495323594).

The spelling of 123112273 in words is "one hundred twenty-three million, one hundred twelve thousand, two hundred seventy-three".