215434233 has 18 divisors (see below), whose sum is σ = 361988874. Its totient is φ = 123105024.

The previous prime is 215434223. The next prime is 215434237. The reversal of 215434233 is 332434512.

It can be written as a sum of positive squares in only one way, i.e., 214241769 + 1192464 = 14637^2 + 1092^2 .

It is not a de Polignac number, because 215434233 - 2¹⁰ = 215433209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 215434197 and 215434206.

It is not an unprimeable number, because it can be changed into a prime (215434237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 243816 + ... + 244697.

It is an arithmetic number, because the mean of its divisors is an integer number (20110493).

Almost surely, 2^215434233 is an apocalyptic number.

It is an amenable number.

215434233 is a deficient number, since it is larger than the sum of its proper divisors (146554641).

215434233 is a wasteful number, since it uses less digits than its factorization.

215434233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488533 (or 488523 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 215434233 is about 14677.6780520626. The cubic root of 215434233 is about 599.4756836207.

Adding to 215434233 its reverse (332434512), we get a palindrome (547868745).

The spelling of 215434233 in words is "two hundred fifteen million, four hundred thirty-four thousand, two hundred thirty-three".