23440343 has 2 divisors, whose sum is σ = 23440344. Its totient is φ = 23440342.

The previous prime is 23440321. The next prime is 23440349. The reversal of 23440343 is 34304432.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23440343 - 2²² = 19246039 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23440349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11720171 + 11720172.

It is an arithmetic number, because the mean of its divisors is an integer number (11720172).

Almost surely, 2^23440343 is an apocalyptic number.

23440343 is a deficient number, since it is larger than the sum of its proper divisors (1).

23440343 is an equidigital number, since it uses as much as digits as its factorization.

23440343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 23.

The square root of 23440343 is about 4841.5227976330. The cubic root of 23440343 is about 286.1901314508.

Adding to 23440343 its reverse (34304432), we get a palindrome (57744775).

The spelling of 23440343 in words is "twenty-three million, four hundred forty thousand, three hundred forty-three".