123013140065 has 4 divisors (see below), whose sum is σ = 147615768084. Its totient is φ = 98410512048.

The previous prime is 123013140053. The next prime is 123013140077. The reversal of 123013140065 is 560041310321.

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

It is an interprime number because it is at equal distance from previous prime (123013140053) and next prime (123013140077).

It can be written as a sum of positive squares in 2 ways, for example, as 34965634081 + 88047505984 = 186991^2 + 296728^2 .

It is a cyclic number.

It is not a de Polignac number, because 123013140065 - 2⁶ = 123013140001 is a prime.

It is a super-3 number, since 3×123013140065³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12301314002 + ... + 12301314011.

It is an arithmetic number, because the mean of its divisors is an integer number (36903942021).

Almost surely, 2^123013140065 is an apocalyptic number.

It is an amenable number.

123013140065 is a deficient number, since it is larger than the sum of its proper divisors (24602628019).

123013140065 is an equidigital number, since it uses as much as digits as its factorization.

123013140065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24602628018.

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 123013140065 its reverse (560041310321), we get a palindrome (683054450386).

The spelling of 123013140065 in words is "one hundred twenty-three billion, thirteen million, one hundred forty thousand, sixty-five".