215031016 has 32 divisors (see below), whose sum is σ = 413994240. Its totient is φ = 104657728.

The previous prime is 215031007. The next prime is 215031023. The reversal of 215031016 is 610130512.

It is a junction number, because it is equal to n+sod(n) for n = 215030984 and 215031002.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 72621 + ... + 75523.

It is an arithmetic number, because the mean of its divisors is an integer number (12937320).

Almost surely, 2^215031016 is an apocalyptic number.

It is an amenable number.

215031016 is a deficient number, since it is larger than the sum of its proper divisors (198963224).

215031016 is a wasteful number, since it uses less digits than its factorization.

215031016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3153 (or 3149 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 215031016 is about 14663.9358972958. The cubic root of 215031016 is about 599.1014476037.

Adding to 215031016 its reverse (610130512), we get a palindrome (825161528).

The spelling of 215031016 in words is "two hundred fifteen million, thirty-one thousand, sixteen".