228103432987 has 2 divisors, whose sum is σ = 228103432988. Its totient is φ = 228103432986.

The previous prime is 228103432841. The next prime is 228103433053. The reversal of 228103432987 is 789234301822.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 228103432987 - 2¹⁵ = 228103400219 is a prime.

It is a super-2 number, since 2×228103432987² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 228103432987.

It is not a weakly prime, because it can be changed into another prime (228103432087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114051716493 + 114051716494.

It is an arithmetic number, because the mean of its divisors is an integer number (114051716494).

Almost surely, 2^228103432987 is an apocalyptic number.

228103432987 is a deficient number, since it is larger than the sum of its proper divisors (1).

228103432987 is an equidigital number, since it uses as much as digits as its factorization.

228103432987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1161216, while the sum is 49.

The spelling of 228103432987 in words is "two hundred twenty-eight billion, one hundred three million, four hundred thirty-two thousand, nine hundred eighty-seven".