228507823 has 2 divisors, whose sum is σ = 228507824. Its totient is φ = 228507822.

The previous prime is 228507821. The next prime is 228507827. The reversal of 228507823 is 328705822.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 228507823 - 2¹ = 228507821 is a prime.

Together with 228507821, 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 (228507821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114253911 + 114253912.

It is an arithmetic number, because the mean of its divisors is an integer number (114253912).

Almost surely, 2^228507823 is an apocalyptic number.

228507823 is a deficient number, since it is larger than the sum of its proper divisors (1).

228507823 is an equidigital number, since it uses as much as digits as its factorization.

228507823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 228507823 is about 15116.4752174573. The cubic root of 228507823 is about 611.3646979000.

The spelling of 228507823 in words is "two hundred twenty-eight million, five hundred seven thousand, eight hundred twenty-three".