23151647 has 2 divisors, whose sum is σ = 23151648. Its totient is φ = 23151646.

The previous prime is 23151643. The next prime is 23151679. The reversal of 23151647 is 74615132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23151647 - 2² = 23151643 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 (23151643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11575823 + 11575824.

It is an arithmetic number, because the mean of its divisors is an integer number (11575824).

Almost surely, 2^23151647 is an apocalyptic number.

23151647 is a deficient number, since it is larger than the sum of its proper divisors (1).

23151647 is an equidigital number, since it uses as much as digits as its factorization.

23151647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 29.

The square root of 23151647 is about 4811.6158408585. The cubic root of 23151647 is about 285.0103494754.

Adding to 23151647 its reverse (74615132), we get a palindrome (97766779).

The spelling of 23151647 in words is "twenty-three million, one hundred fifty-one thousand, six hundred forty-seven".