228430040393 has 2 divisors, whose sum is σ = 228430040394. Its totient is φ = 228430040392.

The previous prime is 228430040381. The next prime is 228430040407. The reversal of 228430040393 is 393040034822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 218871458569 + 9558581824 = 467837^2 + 97768^2 .

It is a cyclic number.

It is not a de Polignac number, because 228430040393 - 2¹² = 228430036297 is a prime.

It is a super-2 number, since 2×228430040393² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (228430040303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114215020196 + 114215020197.

It is an arithmetic number, because the mean of its divisors is an integer number (114215020197).

Almost surely, 2^228430040393 is an apocalyptic number.

It is an amenable number.

228430040393 is a deficient number, since it is larger than the sum of its proper divisors (1).

228430040393 is an equidigital number, since it uses as much as digits as its factorization.

228430040393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 38.

The spelling of 228430040393 in words is "two hundred twenty-eight billion, four hundred thirty million, forty thousand, three hundred ninety-three".