123313030013 has 4 divisors (see below), whose sum is σ = 124025822268. Its totient is φ = 122600237760.

The previous prime is 123313030003. The next prime is 123313030037. The reversal of 123313030013 is 310030313321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 310030313321 = 2417 ⋅128270713.

It can be written as a sum of positive squares in 2 ways, for example, as 54822476164 + 68490553849 = 234142^2 + 261707^2 .

It is a cyclic number.

It is not a de Polignac number, because 123313030013 - 2¹⁶ = 123312964477 is a prime.

It is a super-2 number, since 2×123313030013² (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 (123313030003) 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, 356395868 + ... + 356396213.

It is an arithmetic number, because the mean of its divisors is an integer number (31006455567).

Almost surely, 2^123313030013 is an apocalyptic number.

It is an amenable number.

123313030013 is a deficient number, since it is larger than the sum of its proper divisors (712792255).

123313030013 is an equidigital number, since it uses as much as digits as its factorization.

123313030013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712792254.

The product of its (nonzero) digits is 486, while the sum is 20.

Adding to 123313030013 its reverse (310030313321), we get a palindrome (433343343334).

The spelling of 123313030013 in words is "one hundred twenty-three billion, three hundred thirteen million, thirty thousand, thirteen".