123311011323 has 4 divisors (see below), whose sum is σ = 164414681768. Its totient is φ = 82207340880.

The previous prime is 123311011321. The next prime is 123311011357. The reversal of 123311011323 is 323110113321.

It is a happy number.

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

It is not a de Polignac number, because 123311011323 - 2¹ = 123311011321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123311011323.

It is not an unprimeable number, because it can be changed into a prime (123311011321) 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, 20551835218 + ... + 20551835223.

It is an arithmetic number, because the mean of its divisors is an integer number (41103670442).

Almost surely, 2^123311011323 is an apocalyptic number.

123311011323 is a deficient number, since it is larger than the sum of its proper divisors (41103670445).

123311011323 is an equidigital number, since it uses as much as digits as its factorization.

123311011323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41103670444.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 123311011323 its reverse (323110113321), we get a palindrome (446421124644).

The spelling of 123311011323 in words is "one hundred twenty-three billion, three hundred eleven million, eleven thousand, three hundred twenty-three".