123023134213 has 4 divisors (see below), whose sum is σ = 140597867680. Its totient is φ = 105448400748.

The previous prime is 123023134207. The next prime is 123023134237. The reversal of 123023134213 is 312431320321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 312431320321 = 7867 ⋅39714163.

It is a cyclic number.

It is not a de Polignac number, because 123023134213 - 2¹⁷ = 123023003141 is a prime.

It is a super-2 number, since 2×123023134213² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123023134253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8787366723 + ... + 8787366736.

It is an arithmetic number, because the mean of its divisors is an integer number (35149466920).

Almost surely, 2^123023134213 is an apocalyptic number.

It is an amenable number.

123023134213 is a deficient number, since it is larger than the sum of its proper divisors (17574733467).

123023134213 is an equidigital number, since it uses as much as digits as its factorization.

123023134213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17574733466.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 123023134213 its reverse (312431320321), we get a palindrome (435454454534).

The spelling of 123023134213 in words is "one hundred twenty-three billion, twenty-three million, one hundred thirty-four thousand, two hundred thirteen".