123311201323 has 4 divisors (see below), whose sum is σ = 123347893528. Its totient is φ = 123274509120.

The previous prime is 123311201303. The next prime is 123311201333. The reversal of 123311201323 is 323102113321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 323102113321 = 13 ⋅24854008717.

It is a cyclic number.

It is not a de Polignac number, because 123311201323 - 2⁵ = 123311201291 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123311201294 and 123311201303.

It is not an unprimeable number, because it can be changed into a prime (123311201303) 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, 18341061 + ... + 18347782.

It is an arithmetic number, because the mean of its divisors is an integer number (30836973382).

Almost surely, 2^123311201323 is an apocalyptic number.

123311201323 is a deficient number, since it is larger than the sum of its proper divisors (36692205).

123311201323 is an equidigital number, since it uses as much as digits as its factorization.

123311201323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36692204.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 123311201323 its reverse (323102113321), we get a palindrome (446413314644).

The spelling of 123311201323 in words is "one hundred twenty-three billion, three hundred eleven million, two hundred one thousand, three hundred twenty-three".