215315012 has 12 divisors (see below), whose sum is σ = 411056016. Its totient is φ = 97870440.

The previous prime is 215314999. The next prime is 215315017. The reversal of 215315012 is 210513512.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (215315017) by changing a digit.

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, 2446718 + ... + 2446805.

It is an arithmetic number, because the mean of its divisors is an integer number (34254668).

Almost surely, 2^215315012 is an apocalyptic number.

215315012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

215315012 is a deficient number, since it is larger than the sum of its proper divisors (195741004).

215315012 is a wasteful number, since it uses less digits than its factorization.

215315012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4893538 (or 4893536 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 215315012 is about 14673.6161868845. The cubic root of 215315012 is about 599.3650802170.

Adding to 215315012 its reverse (210513512), we get a palindrome (425828524).

The spelling of 215315012 in words is "two hundred fifteen million, three hundred fifteen thousand, twelve".