3109231 has 4 divisors (see below), whose sum is σ = 3160264. Its totient is φ = 3058200.

The previous prime is 3109213. The next prime is 3109247. The reversal of 3109231 is 1329013.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1329013 = 7 ⋅189859.

It is a cyclic number.

It is not a de Polignac number, because 3109231 - 2⁵ = 3109199 is a prime.

It is a super-2 number, since 2×3109231² = 19334634822722, which contains 22 as substring.

It is a Duffinian number.

3109231 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3109199 and 3109208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3109031) 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, 25425 + ... + 25546.

It is an arithmetic number, because the mean of its divisors is an integer number (790066).

Almost surely, 2^3109231 is an apocalyptic number.

3109231 is a deficient number, since it is larger than the sum of its proper divisors (51033).

3109231 is an equidigital number, since it uses as much as digits as its factorization.

3109231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51032.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 3109231 is about 1763.3011654281. The cubic root of 3109231 is about 145.9545583231.

The spelling of 3109231 in words is "three million, one hundred nine thousand, two hundred thirty-one".