87311211 has 8 divisors (see below), whose sum is σ = 125370000. Its totient is φ = 53729952.

The previous prime is 87311207. The next prime is 87311219. The reversal of 87311211 is 11211378.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87311211 - 2² = 87311207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87311219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1119336 + ... + 1119413.

It is an arithmetic number, because the mean of its divisors is an integer number (15671250).

Almost surely, 2^87311211 is an apocalyptic number.

87311211 is a deficient number, since it is larger than the sum of its proper divisors (38058789).

87311211 is a wasteful number, since it uses less digits than its factorization.

87311211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2238765.

The product of its digits is 336, while the sum is 24.

The square root of 87311211 is about 9344.0468213724. The cubic root of 87311211 is about 443.6324823767.

Adding to 87311211 its reverse (11211378), we get a palindrome (98522589).

The spelling of 87311211 in words is "eighty-seven million, three hundred eleven thousand, two hundred eleven".