987433331 has 2 divisors, whose sum is σ = 987433332. Its totient is φ = 987433330.

The previous prime is 987433313. The next prime is 987433333. The reversal of 987433331 is 133334789.

Together with previous prime (987433313) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-987433331 is a prime.

It is a super-2 number, since 2×987433331² = 1950049166339511122, which contains 22 as substring.

Together with 987433333, it forms a pair of twin primes.

It is a Chen prime.

It is a nialpdrome in base 10.

It is not a weakly prime, because it can be changed into another prime (987433333) 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, 493716665 + 493716666.

It is an arithmetic number, because the mean of its divisors is an integer number (493716666).

Almost surely, 2^987433331 is an apocalyptic number.

987433331 is a deficient number, since it is larger than the sum of its proper divisors (1).

987433331 is an equidigital number, since it uses as much as digits as its factorization.

987433331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 41.

The square root of 987433331 is about 31423.4519268651. The cubic root of 987433331 is about 995.7934399982.

The spelling of 987433331 in words is "nine hundred eighty-seven million, four hundred thirty-three thousand, three hundred thirty-one".