8115231 has 4 divisors (see below), whose sum is σ = 10820312. Its totient is φ = 5410152.

The previous prime is 8115227. The next prime is 8115259. The reversal of 8115231 is 1325118.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 8115231 - 2² = 8115227 is a prime.

It is a super-3 number, since 3×8115231³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8115198 and 8115207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8115131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1352536 + ... + 1352541.

It is an arithmetic number, because the mean of its divisors is an integer number (2705078).

Almost surely, 2^8115231 is an apocalyptic number.

8115231 is a deficient number, since it is larger than the sum of its proper divisors (2705081).

8115231 is a wasteful number, since it uses less digits than its factorization.

8115231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2705080.

The product of its digits is 240, while the sum is 21.

The square root of 8115231 is about 2848.7244513993. The cubic root of 8115231 is about 200.9556843962.

The spelling of 8115231 in words is "eight million, one hundred fifteen thousand, two hundred thirty-one".