123023101011 has 4 divisors (see below), whose sum is σ = 164030801352. Its totient is φ = 82015400672.

The previous prime is 123023101009. The next prime is 123023101079. The reversal of 123023101011 is 110101320321.

It is a happy number.

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 123023101011 - 2¹ = 123023101009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123023101511) 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, 20503850166 + ... + 20503850171.

It is an arithmetic number, because the mean of its divisors is an integer number (41007700338).

Almost surely, 2^123023101011 is an apocalyptic number.

123023101011 is a deficient number, since it is larger than the sum of its proper divisors (41007700341).

123023101011 is an equidigital number, since it uses as much as digits as its factorization.

123023101011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41007700340.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 123023101011 its reverse (110101320321), we get a palindrome (233124421332).

The spelling of 123023101011 in words is "one hundred twenty-three billion, twenty-three million, one hundred one thousand, eleven".