215315342 has 16 divisors (see below), whose sum is σ = 352944000. Its totient is φ = 97701240.

The previous prime is 215315329. The next prime is 215315357. The reversal of 215315342 is 243513512.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5009 + ... + 21347.

It is an arithmetic number, because the mean of its divisors is an integer number (22059000).

Almost surely, 2^215315342 is an apocalyptic number.

215315342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

215315342 is a deficient number, since it is larger than the sum of its proper divisors (137628658).

215315342 is a wasteful number, since it uses less digits than its factorization.

215315342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16951.

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

The square root of 215315342 is about 14673.6274315522. The cubic root of 215315342 is about 599.3653864201.

Adding to 215315342 its reverse (243513512), we get a palindrome (458828854).

The spelling of 215315342 in words is "two hundred fifteen million, three hundred fifteen thousand, three hundred forty-two".