2309231 has 2 divisors, whose sum is σ = 2309232. Its totient is φ = 2309230.

The previous prime is 2309227. The next prime is 2309233. The reversal of 2309231 is 1329032.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2309231 - 2² = 2309227 is a prime.

It is a super-2 number, since 2×2309231² = 10665095622722, which contains 22 as substring.

Together with 2309233, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2309233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1154615 + 1154616.

It is an arithmetic number, because the mean of its divisors is an integer number (1154616).

2^2309231 is an apocalyptic number.

2309231 is a deficient number, since it is larger than the sum of its proper divisors (1).

2309231 is an equidigital number, since it uses as much as digits as its factorization.

2309231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 2309231 is about 1519.6154118724. The cubic root of 2309231 is about 132.1769703156.

The spelling of 2309231 in words is "two million, three hundred nine thousand, two hundred thirty-one".