123311313023 has 4 divisors (see below), whose sum is σ = 124252620888. Its totient is φ = 122370005160.

The previous prime is 123311313017. The next prime is 123311313031. The reversal of 123311313023 is 320313113321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320313113321 = 59 ⋅5429035819.

It is a cyclic number.

It is not a de Polignac number, because 123311313023 - 2¹² = 123311308927 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 123311313023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123311373023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 470653736 + ... + 470653997.

It is an arithmetic number, because the mean of its divisors is an integer number (31063155222).

Almost surely, 2^123311313023 is an apocalyptic number.

123311313023 is a deficient number, since it is larger than the sum of its proper divisors (941307865).

123311313023 is an equidigital number, since it uses as much as digits as its factorization.

123311313023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941307864.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 123311313023 its reverse (320313113321), we get a palindrome (443624426344).

The spelling of 123311313023 in words is "one hundred twenty-three billion, three hundred eleven million, three hundred thirteen thousand, twenty-three".