23340143 has 2 divisors, whose sum is σ = 23340144. Its totient is φ = 23340142.

The previous prime is 23340137. The next prime is 23340169. The reversal of 23340143 is 34104332.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23340143 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23340173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11670071 + 11670072.

It is an arithmetic number, because the mean of its divisors is an integer number (11670072).

Almost surely, 2^23340143 is an apocalyptic number.

23340143 is a deficient number, since it is larger than the sum of its proper divisors (1).

23340143 is an equidigital number, since it uses as much as digits as its factorization.

23340143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 23340143 is about 4831.1637314419. The cubic root of 23340143 is about 285.7817584576.

Adding to 23340143 its reverse (34104332), we get a palindrome (57444475).

The spelling of 23340143 in words is "twenty-three million, three hundred forty thousand, one hundred forty-three".