7109231 has 12 divisors (see below), whose sum is σ = 7565040. Its totient is φ = 6679200.

The previous prime is 7109209. The next prime is 7109257. The reversal of 7109231 is 1329017.

It is a de Polignac number, because none of the positive numbers 2^k-7109231 is a prime.

It is a super-2 number, since 2×7109231² = 101082330822722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7109197 and 7109206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7109731) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47006 + ... + 47156.

It is an arithmetic number, because the mean of its divisors is an integer number (630420).

Almost surely, 2^7109231 is an apocalyptic number.

7109231 is a deficient number, since it is larger than the sum of its proper divisors (455809).

7109231 is a wasteful number, since it uses less digits than its factorization.

7109231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286 (or 263 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 7109231 is about 2666.3141225295. The cubic root of 7109231 is about 192.2829937798.

It can be divided in two parts, 710 and 9231, that multiplied together give a triangular number (6554010 = T₃₆₂₀).

The spelling of 7109231 in words is "seven million, one hundred nine thousand, two hundred thirty-one".