215513234 has 8 divisors (see below), whose sum is σ = 332006988. Its totient is φ = 104844240.

The previous prime is 215513203. The next prime is 215513251. The reversal of 215513234 is 432315512.

It is a happy number.

215513234 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 215355625 + 157609 = 14675^2 + 397^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1456097 + ... + 1456244.

Almost surely, 2^215513234 is an apocalyptic number.

215513234 is a deficient number, since it is larger than the sum of its proper divisors (116493754).

215513234 is a wasteful number, since it uses less digits than its factorization.

215513234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2912380.

The product of its digits is 3600, while the sum is 26.

The square root of 215513234 is about 14680.3690008119. The cubic root of 215513234 is about 599.5489517515.

Adding to 215513234 its reverse (432315512), we get a palindrome (647828746).

The spelling of 215513234 in words is "two hundred fifteen million, five hundred thirteen thousand, two hundred thirty-four".