23278471 has 2 divisors, whose sum is σ = 23278472. Its totient is φ = 23278470.

The previous prime is 23278441. The next prime is 23278481. The reversal of 23278471 is 17487232.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23278471 - 2⁹ = 23277959 is a prime.

It is a super-3 number, since 3×23278471³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23278441) 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, 11639235 + 11639236.

It is an arithmetic number, because the mean of its divisors is an integer number (11639236).

Almost surely, 2^23278471 is an apocalyptic number.

23278471 is a deficient number, since it is larger than the sum of its proper divisors (1).

23278471 is an equidigital number, since it uses as much as digits as its factorization.

23278471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18816, while the sum is 34.

The square root of 23278471 is about 4824.7767824014. The cubic root of 23278471 is about 285.5298279989.

The spelling of 23278471 in words is "twenty-three million, two hundred seventy-eight thousand, four hundred seventy-one".