123011311121423 has 8 divisors (see below), whose sum is σ = 125055569681280. Its totient is φ = 120967945454880.

The previous prime is 123011311121399. The next prime is 123011311121453. The reversal of 123011311121423 is 324121113110321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123011311121423 - 2¹⁶ = 123011311055887 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123011311121392 and 123011311121401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123011311121453) 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 7 ways as a sum of consecutive naturals, for example, 222945503 + ... + 223496576.

It is an arithmetic number, because the mean of its divisors is an integer number (15631946210160).

Almost surely, 2^{123011311121423} is an apocalyptic number.

123011311121423 is a deficient number, since it is larger than the sum of its proper divisors (2044258559857).

123011311121423 is an equidigital number, since it uses as much as digits as its factorization.

123011311121423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446446657.

The product of its (nonzero) digits is 864, while the sum is 26.

Adding to 123011311121423 its reverse (324121113110321), we get a palindrome (447132424231744).

The spelling of 123011311121423 in words is "one hundred twenty-three trillion, eleven billion, three hundred eleven million, one hundred twenty-one thousand, four hundred twenty-three".