228031007 has 2 divisors, whose sum is σ = 228031008. Its totient is φ = 228031006.

The previous prime is 228030967. The next prime is 228031043. The reversal of 228031007 is 700130822.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228031007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228031057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114015503 + 114015504.

It is an arithmetic number, because the mean of its divisors is an integer number (114015504).

Almost surely, 2^228031007 is an apocalyptic number.

228031007 is a deficient number, since it is larger than the sum of its proper divisors (1).

228031007 is an equidigital number, since it uses as much as digits as its factorization.

228031007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 228031007 is about 15100.6955800056. The cubic root of 228031007 is about 610.9391669340.

Adding to 228031007 its reverse (700130822), we get a palindrome (928161829).

The spelling of 228031007 in words is "two hundred twenty-eight million, thirty-one thousand, seven".