1005312215 has 16 divisors (see below), whose sum is σ = 1232192736. Its totient is φ = 787113600.

The previous prime is 1005312199. The next prime is 1005312233. The reversal of 1005312215 is 5122135001.

It is a happy number.

It is not a de Polignac number, because 1005312215 - 2⁴ = 1005312199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107060 + ... + 116070.

It is an arithmetic number, because the mean of its divisors is an integer number (77012046).

Almost surely, 2^1005312215 is an apocalyptic number.

1005312215 is a deficient number, since it is larger than the sum of its proper divisors (226880521).

1005312215 is an equidigital number, since it uses as much as digits as its factorization.

1005312215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9490.

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

The square root of 1005312215 is about 31706.6588432146. The cubic root of 1005312215 is about 1001.7676120401.

Adding to 1005312215 its reverse (5122135001), we get a palindrome (6127447216).

The spelling of 1005312215 in words is "one billion, five million, three hundred twelve thousand, two hundred fifteen".