23471729 has 2 divisors, whose sum is σ = 23471730. Its totient is φ = 23471728.

The previous prime is 23471719. The next prime is 23471731. The reversal of 23471729 is 92717432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14077504 + 9394225 = 3752^2 + 3065^2 .

It is a cyclic number.

It is not a de Polignac number, because 23471729 - 2¹⁶ = 23406193 is a prime.

Together with 23471731, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23471719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11735864 + 11735865.

It is an arithmetic number, because the mean of its divisors is an integer number (11735865).

Almost surely, 2^23471729 is an apocalyptic number.

It is an amenable number.

23471729 is a deficient number, since it is larger than the sum of its proper divisors (1).

23471729 is an equidigital number, since it uses as much as digits as its factorization.

23471729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 35.

The square root of 23471729 is about 4844.7630489014. The cubic root of 23471729 is about 286.3178081575.

The spelling of 23471729 in words is "twenty-three million, four hundred seventy-one thousand, seven hundred twenty-nine".