87313201 has 2 divisors, whose sum is σ = 87313202. Its totient is φ = 87313200.

The previous prime is 87313199. The next prime is 87313211. The reversal of 87313201 is 10231378.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81432576 + 5880625 = 9024^2 + 2425^2 .

It is a cyclic number.

It is not a de Polignac number, because 87313201 - 2¹ = 87313199 is a prime.

Together with 87313199, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (87313211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43656600 + 43656601.

It is an arithmetic number, because the mean of its divisors is an integer number (43656601).

Almost surely, 2^87313201 is an apocalyptic number.

It is an amenable number.

87313201 is a deficient number, since it is larger than the sum of its proper divisors (1).

87313201 is an equidigital number, since it uses as much as digits as its factorization.

87313201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 87313201 is about 9344.1533056773. The cubic root of 87313201 is about 443.6358527799.

Adding to 87313201 its reverse (10231378), we get a palindrome (97544579).

The spelling of 87313201 in words is "eighty-seven million, three hundred thirteen thousand, two hundred one".