13123012320133 has 4 divisors (see below), whose sum is σ = 13123472143788. Its totient is φ = 13122552496480.

The previous prime is 13123012320097. The next prime is 13123012320157. The reversal of 13123012320133 is 33102321032131.

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 7710051783204 + 5412960536929 = 2776698^2 + 2326577^2 .

It is a cyclic number.

It is not a de Polignac number, because 13123012320133 - 2²¹ = 13123010222981 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13123012320098 and 13123012320107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123012320233) 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, 229869016 + ... + 229926097.

It is an arithmetic number, because the mean of its divisors is an integer number (3280868035947).

Almost surely, 2^{13123012320133} is an apocalyptic number.

It is an amenable number.

13123012320133 is a deficient number, since it is larger than the sum of its proper divisors (459823655).

13123012320133 is an equidigital number, since it uses as much as digits as its factorization.

13123012320133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459823654.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 13123012320133 its reverse (33102321032131), we get a palindrome (46225333352264).

The spelling of 13123012320133 in words is "thirteen trillion, one hundred twenty-three billion, twelve million, three hundred twenty thousand, one hundred thirty-three".