106321087 has 2 divisors, whose sum is σ = 106321088. Its totient is φ = 106321086.

The previous prime is 106321079. The next prime is 106321099. The reversal of 106321087 is 780123601.

It is a weak prime.

It is an emirp because it is prime and its reverse (780123601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 106321087 - 2³ = 106321079 is a prime.

It is a super-4 number, since 4×106321087⁴ (a number of 33 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (106321067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53160543 + 53160544.

It is an arithmetic number, because the mean of its divisors is an integer number (53160544).

Almost surely, 2^106321087 is an apocalyptic number.

106321087 is a deficient number, since it is larger than the sum of its proper divisors (1).

106321087 is an equidigital number, since it uses as much as digits as its factorization.

106321087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 106321087 is about 10311.2117134700. The cubic root of 106321087 is about 473.7397239970.

Adding to 106321087 its reverse (780123601), we get a palindrome (886444688).

The spelling of 106321087 in words is "one hundred six million, three hundred twenty-one thousand, eighty-seven".