13123433441 has 4 divisors (see below), whose sum is σ = 13895400132. Its totient is φ = 12351466752.

The previous prime is 13123433431. The next prime is 13123433459. The reversal of 13123433441 is 14433432131.

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 10054273441 + 3069160000 = 100271^2 + 55400^2 .

It is a cyclic number.

It is not a de Polignac number, because 13123433441 - 2⁶ = 13123433377 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13123433431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 385983320 + ... + 385983353.

It is an arithmetic number, because the mean of its divisors is an integer number (3473850033).

Almost surely, 2^13123433441 is an apocalyptic number.

It is an amenable number.

13123433441 is a deficient number, since it is larger than the sum of its proper divisors (771966691).

13123433441 is an equidigital number, since it uses as much as digits as its factorization.

13123433441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771966690.

The product of its digits is 10368, while the sum is 29.

Adding to 13123433441 its reverse (14433432131), we get a palindrome (27556865572).

The spelling of 13123433441 in words is "thirteen billion, one hundred twenty-three million, four hundred thirty-three thousand, four hundred forty-one".