123533226013 has 4 divisors (see below), whose sum is σ = 123536879740. Its totient is φ = 123529572288.

The previous prime is 123533225993. The next prime is 123533226049. The reversal of 123533226013 is 310622335321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 310622335321 = 23 ⋅13505318927.

It can be written as a sum of positive squares in 2 ways, for example, as 59866834329 + 63666391684 = 244677^2 + 252322^2 .

It is a cyclic number.

It is not a de Polignac number, because 123533226013 - 2²⁹ = 122996355101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123533226073) 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, 1775670 + ... + 1843927.

It is an arithmetic number, because the mean of its divisors is an integer number (30884219935).

Almost surely, 2^123533226013 is an apocalyptic number.

It is an amenable number.

123533226013 is a deficient number, since it is larger than the sum of its proper divisors (3653727).

123533226013 is an equidigital number, since it uses as much as digits as its factorization.

123533226013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3653726.

The product of its (nonzero) digits is 19440, while the sum is 31.

The spelling of 123533226013 in words is "one hundred twenty-three billion, five hundred thirty-three million, two hundred twenty-six thousand, thirteen".