8791231 has 4 divisors (see below), whose sum is σ = 8819632. Its totient is φ = 8762832.

The previous prime is 8791229. The next prime is 8791247. The reversal of 8791231 is 1321978.

8791231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 8791231 - 2¹ = 8791229 is a prime.

It is a super-2 number, since 2×8791231² = 154571484990722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8791193 and 8791202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8795231) 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, 13731 + ... + 14356.

It is an arithmetic number, because the mean of its divisors is an integer number (2204908).

Almost surely, 2^8791231 is an apocalyptic number.

8791231 is a deficient number, since it is larger than the sum of its proper divisors (28401).

8791231 is a wasteful number, since it uses less digits than its factorization.

8791231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28400.

The product of its digits is 3024, while the sum is 31.

The square root of 8791231 is about 2965.0010118042. The cubic root of 8791231 is about 206.3874240555.

It can be divided in two parts, 87912 and 31, that multiplied together give a palindrome (2725272).

The spelling of 8791231 in words is "eight million, seven hundred ninety-one thousand, two hundred thirty-one".