123101113 has 4 divisors (see below), whose sum is σ = 123612148. Its totient is φ = 122590080.

The previous prime is 123101087. The next prime is 123101119. The reversal of 123101113 is 311101321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 70509609 + 52591504 = 8397^2 + 7252^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123101113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123101093 and 123101102.

It is not an unprimeable number, because it can be changed into a prime (123101119) 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, 255156 + ... + 255637.

It is an arithmetic number, because the mean of its divisors is an integer number (30903037).

Almost surely, 2^123101113 is an apocalyptic number.

It is an amenable number.

123101113 is a deficient number, since it is larger than the sum of its proper divisors (511035).

123101113 is an equidigital number, since it uses as much as digits as its factorization.

123101113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511034.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 123101113 is about 11095.0940960408. The cubic root of 123101113 is about 497.4552208377.

Adding to 123101113 its reverse (311101321), we get a palindrome (434202434).

The spelling of 123101113 in words is "one hundred twenty-three million, one hundred one thousand, one hundred thirteen".