123011117 has 2 divisors, whose sum is σ = 123011118. Its totient is φ = 123011116.

The previous prime is 123011113. The next prime is 123011143. The reversal of 123011117 is 711110321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114361636 + 8649481 = 10694^2 + 2941^2 .

It is a cyclic number.

It is not a de Polignac number, because 123011117 - 2² = 123011113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123011095 and 123011104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123011113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61505558 + 61505559.

It is an arithmetic number, because the mean of its divisors is an integer number (61505559).

Almost surely, 2^123011117 is an apocalyptic number.

It is an amenable number.

123011117 is a deficient number, since it is larger than the sum of its proper divisors (1).

123011117 is an equidigital number, since it uses as much as digits as its factorization.

123011117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42, while the sum is 17.

The square root of 123011117 is about 11091.0376881516. The cubic root of 123011117 is about 497.3339657891. Note that the first 3 decimals are identical.

Adding to 123011117 its reverse (711110321), we get a palindrome (834121438).

The spelling of 123011117 in words is "one hundred twenty-three million, eleven thousand, one hundred seventeen".