145316215 has 16 divisors (see below), whose sum is σ = 190473120. Its totient is φ = 105550720.

The previous prime is 145316191. The next prime is 145316243. The reversal of 145316215 is 512613541.

It is not a de Polignac number, because 145316215 - 2⁵ = 145316183 is a prime.

It is a super-2 number, since 2×145316215² = 42233604683852450, which contains 22 as substring.

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, 69201 + ... + 71269.

It is an arithmetic number, because the mean of its divisors is an integer number (11904570).

Almost surely, 2^145316215 is an apocalyptic number.

145316215 is a deficient number, since it is larger than the sum of its proper divisors (45156905).

145316215 is a wasteful number, since it uses less digits than its factorization.

145316215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3362.

The product of its digits is 3600, while the sum is 28.

The square root of 145316215 is about 12054.7175412782. The cubic root of 145316215 is about 525.7404095772.

Adding to 145316215 its reverse (512613541), we get a palindrome (657929756).

The spelling of 145316215 in words is "one hundred forty-five million, three hundred sixteen thousand, two hundred fifteen".