123313011011 has 4 divisors (see below), whose sum is σ = 123579346272. Its totient is φ = 123046675752.

The previous prime is 123313010999. The next prime is 123313011043. The reversal of 123313011011 is 110110313321.

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 123313011011 - 2¹⁰ = 123313009987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123313013011) 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, 133166936 + ... + 133167861.

It is an arithmetic number, because the mean of its divisors is an integer number (30894836568).

Almost surely, 2^123313011011 is an apocalyptic number.

123313011011 is a deficient number, since it is larger than the sum of its proper divisors (266335261).

123313011011 is an equidigital number, since it uses as much as digits as its factorization.

123313011011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266335260.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 123313011011 its reverse (110110313321), we get a palindrome (233423324332).

The spelling of 123313011011 in words is "one hundred twenty-three billion, three hundred thirteen million, eleven thousand, eleven".