215040353 has 8 divisors (see below), whose sum is σ = 236529696. Its totient is φ = 195490020.

The previous prime is 215040349. The next prime is 215040359. The reversal of 215040353 is 353040512.

It is not a de Polignac number, because 215040353 - 2² = 215040349 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215040359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79451 + ... + 82112.

It is an arithmetic number, because the mean of its divisors is an integer number (29566212).

Almost surely, 2^215040353 is an apocalyptic number.

It is an amenable number.

215040353 is a deficient number, since it is larger than the sum of its proper divisors (21489343).

215040353 is an equidigital number, since it uses as much as digits as its factorization.

215040353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161596 (or 161574 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 215040353 is about 14664.2542599343. The cubic root of 215040353 is about 599.1101188012.

Adding to 215040353 its reverse (353040512), we get a palindrome (568080865).

The spelling of 215040353 in words is "two hundred fifteen million, forty thousand, three hundred fifty-three".