123008311 has 4 divisors (see below), whose sum is σ = 130244112. Its totient is φ = 115772512.

The previous prime is 123008309. The next prime is 123008317. The reversal of 123008311 is 113800321.

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

It is a cyclic number.

It is not a de Polignac number, because 123008311 - 2¹ = 123008309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123008317) by changing a digit.

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, 3617875 + ... + 3617908.

It is an arithmetic number, because the mean of its divisors is an integer number (32561028).

Almost surely, 2^123008311 is an apocalyptic number.

123008311 is a deficient number, since it is larger than the sum of its proper divisors (7235801).

123008311 is an equidigital number, since it uses as much as digits as its factorization.

123008311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7235800.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 123008311 is about 11090.9111888970. The cubic root of 123008311 is about 497.3301842076.

Adding to 123008311 its reverse (113800321), we get a palindrome (236808632).

The spelling of 123008311 in words is "one hundred twenty-three million, eight thousand, three hundred eleven".