215423343044233 has 24 divisors (see below), whose sum is σ = 233881892483400. Its totient is φ = 198235323880704.

The previous prime is 215423343044087. The next prime is 215423343044243. The reversal of 215423343044233 is 332440343324512.

It can be written as a sum of positive squares in 4 ways, for example, as 61064659814544 + 154358683229689 = 7814388^2 + 12424117^2 .

It is a de Polignac number, because none of the positive numbers 2^k-215423343044233 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 215423343044233.

It is not an unprimeable number, because it can be changed into a prime (215423343044243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60090298 + ... + 63574291.

It is an arithmetic number, because the mean of its divisors is an integer number (9745078853475).

Almost surely, 2^{215423343044233} is an apocalyptic number.

215423343044233 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

215423343044233 is a deficient number, since it is larger than the sum of its proper divisors (18458549439167).

215423343044233 is a wasteful number, since it uses less digits than its factorization.

215423343044233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123664761 (or 123664738 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 43.

Adding to 215423343044233 its reverse (332440343324512), we get a palindrome (547863686368745).

The spelling of 215423343044233 in words is "two hundred fifteen trillion, four hundred twenty-three billion, three hundred forty-three million, forty-four thousand, two hundred thirty-three".