23278711 has 2 divisors, whose sum is σ = 23278712. Its totient is φ = 23278710.

The previous prime is 23278709. The next prime is 23278727. The reversal of 23278711 is 11787232.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23278711 - 2¹ = 23278709 is a prime.

Together with 23278709, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23278511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11639355 + 11639356.

It is an arithmetic number, because the mean of its divisors is an integer number (11639356).

Almost surely, 2^23278711 is an apocalyptic number.

23278711 is a deficient number, since it is larger than the sum of its proper divisors (1).

23278711 is an equidigital number, since it uses as much as digits as its factorization.

23278711 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4704, while the sum is 31.

The square root of 23278711 is about 4824.8016539543. The cubic root of 23278711 is about 285.5308092621.

The spelling of 23278711 in words is "twenty-three million, two hundred seventy-eight thousand, seven hundred eleven".