987212383 has 2 divisors, whose sum is σ = 987212384. Its totient is φ = 987212382.

The previous prime is 987212381. The next prime is 987212407. The reversal of 987212383 is 383212789.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 987212383 - 2¹ = 987212381 is a prime.

Together with 987212381, it forms a pair of twin primes.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (987212381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493606191 + 493606192.

It is an arithmetic number, because the mean of its divisors is an integer number (493606192).

Almost surely, 2^987212383 is an apocalyptic number.

987212383 is a deficient number, since it is larger than the sum of its proper divisors (1).

987212383 is an equidigital number, since it uses as much as digits as its factorization.

987212383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 43.

The square root of 987212383 is about 31419.9360756829. The cubic root of 987212383 is about 995.7191615720.

The spelling of 987212383 in words is "nine hundred eighty-seven million, two hundred twelve thousand, three hundred eighty-three".