123023011001213 has 4 divisors (see below), whose sum is σ = 123033847180188. Its totient is φ = 123012174822240.

The previous prime is 123023011001161. The next prime is 123023011001287. The reversal of 123023011001213 is 312100110320321.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 78920090155204 + 44102920846009 = 8883698^2 + 6641003^2 .

It is a cyclic number.

It is not a de Polignac number, because 123023011001213 - 2¹⁰ = 123023011000189 is a prime.

It is a super-2 number, since 2×123023011001213² (a number of 29 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 (123023011031213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5418072458 + ... + 5418095163.

It is an arithmetic number, because the mean of its divisors is an integer number (30758461795047).

Almost surely, 2^{123023011001213} is an apocalyptic number.

It is an amenable number.

123023011001213 is a deficient number, since it is larger than the sum of its proper divisors (10836178975).

123023011001213 is a wasteful number, since it uses less digits than its factorization.

123023011001213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10836178974.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 123023011001213 its reverse (312100110320321), we get a palindrome (435123121321534).

The spelling of 123023011001213 in words is "one hundred twenty-three trillion, twenty-three billion, eleven million, one thousand, two hundred thirteen".