8215265331 has 48 divisors (see below), whose sum is σ = 14638530816. Its totient is φ = 4323354048.

The previous prime is 8215265321. The next prime is 8215265347. The reversal of 8215265331 is 1335625128.

8215265331 is a `hidden beast` number, since 82 + 1 + 526 + 53 + 3 + 1 = 666.

It is not a de Polignac number, because 8215265331 - 2⁵ = 8215265299 is a prime.

It is a super-2 number, since 2×8215265331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8215265321) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 351496 + ... + 374138.

It is an arithmetic number, because the mean of its divisors is an integer number (304969392).

Almost surely, 2^8215265331 is an apocalyptic number.

8215265331 is a deficient number, since it is larger than the sum of its proper divisors (6423265485).

8215265331 is a wasteful number, since it uses less digits than its factorization.

8215265331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23112 (or 23109 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 8215265331 is about 90638.1008792660. The cubic root of 8215265331 is about 2017.7802406879.

The spelling of 8215265331 in words is "eight billion, two hundred fifteen million, two hundred sixty-five thousand, three hundred thirty-one".