234433987 has 2 divisors, whose sum is σ = 234433988. Its totient is φ = 234433986.

The previous prime is 234433967. The next prime is 234434003. The reversal of 234433987 is 789334432.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 234433987 - 2¹⁹ = 233909699 is a prime.

It is not a weakly prime, because it can be changed into another prime (234433957) 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, 117216993 + 117216994.

It is an arithmetic number, because the mean of its divisors is an integer number (117216994).

Almost surely, 2^234433987 is an apocalyptic number.

234433987 is a deficient number, since it is larger than the sum of its proper divisors (1).

234433987 is an equidigital number, since it uses as much as digits as its factorization.

234433987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 43.

The square root of 234433987 is about 15311.2372785481. The cubic root of 234433987 is about 616.6047384934.

It can be divided in two parts, 23443398 and 7, that multiplied together give a triangular number (164103786 = T₁₈₁₁₆).

The spelling of 234433987 in words is "two hundred thirty-four million, four hundred thirty-three thousand, nine hundred eighty-seven".