123241402213 has 4 divisors (see below), whose sum is σ = 123242488108. Its totient is φ = 123240316320.

The previous prime is 123241402211. The next prime is 123241402241. The reversal of 123241402213 is 312204142321.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 312204142321 = 2531 ⋅123352091.

It can be written as a sum of positive squares in 2 ways, for example, as 116825872804 + 6415529409 = 341798^2 + 80097^2 .

It is a cyclic number.

It is not a de Polignac number, because 123241402213 - 2¹ = 123241402211 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 (123241402211) 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, 349806 + ... + 607327.

It is an arithmetic number, because the mean of its divisors is an integer number (30810622027).

Almost surely, 2^123241402213 is an apocalyptic number.

It is an amenable number.

123241402213 is a deficient number, since it is larger than the sum of its proper divisors (1085895).

123241402213 is an equidigital number, since it uses as much as digits as its factorization.

123241402213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085894.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 123241402213 its reverse (312204142321), we get a palindrome (435445544534).

The spelling of 123241402213 in words is "one hundred twenty-three billion, two hundred forty-one million, four hundred two thousand, two hundred thirteen".