228845731 has 2 divisors, whose sum is σ = 228845732. Its totient is φ = 228845730.

The previous prime is 228845713. The next prime is 228845741. The reversal of 228845731 is 137548822.

It is a happy number.

Together with previous prime (228845713) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 228845731 - 2⁹ = 228845219 is a prime.

It is a super-2 number, since 2×228845731² = 104740737193848722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (228845711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114422865 + 114422866.

It is an arithmetic number, because the mean of its divisors is an integer number (114422866).

Almost surely, 2^228845731 is an apocalyptic number.

228845731 is a deficient number, since it is larger than the sum of its proper divisors (1).

228845731 is an equidigital number, since it uses as much as digits as its factorization.

228845731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 107520, while the sum is 40.

The square root of 228845731 is about 15127.6479004504. The cubic root of 228845731 is about 611.6659031620.

The spelling of 228845731 in words is "two hundred twenty-eight million, eight hundred forty-five thousand, seven hundred thirty-one".