87311207 has 2 divisors, whose sum is σ = 87311208. Its totient is φ = 87311206.

The previous prime is 87311183. The next prime is 87311219. The reversal of 87311207 is 70211378.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87311207 - 2¹⁰ = 87310183 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87311207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87311227) 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 as a sum of consecutive naturals, namely, 43655603 + 43655604.

It is an arithmetic number, because the mean of its divisors is an integer number (43655604).

Almost surely, 2^87311207 is an apocalyptic number.

87311207 is a deficient number, since it is larger than the sum of its proper divisors (1).

87311207 is an equidigital number, since it uses as much as digits as its factorization.

87311207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 87311207 is about 9344.0466073324. The cubic root of 87311207 is about 443.6324756020.

The spelling of 87311207 in words is "eighty-seven million, three hundred eleven thousand, two hundred seven".