228143711 has 2 divisors, whose sum is σ = 228143712. Its totient is φ = 228143710.

The previous prime is 228143701. The next prime is 228143717. The reversal of 228143711 is 117341822.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228143711 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228143717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114071855 + 114071856.

It is an arithmetic number, because the mean of its divisors is an integer number (114071856).

Almost surely, 2^228143711 is an apocalyptic number.

228143711 is a deficient number, since it is larger than the sum of its proper divisors (1).

228143711 is an equidigital number, since it uses as much as digits as its factorization.

228143711 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688, while the sum is 29.

The square root of 228143711 is about 15104.4268676438. The cubic root of 228143711 is about 611.0398022935.

The spelling of 228143711 in words is "two hundred twenty-eight million, one hundred forty-three thousand, seven hundred eleven".