87231701 has 2 divisors, whose sum is σ = 87231702. Its totient is φ = 87231700.

The previous prime is 87231689. The next prime is 87231707. The reversal of 87231701 is 10713278.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57365476 + 29866225 = 7574^2 + 5465^2 .

It is a cyclic number.

It is not a de Polignac number, because 87231701 - 2¹⁰ = 87230677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87231707) 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, 43615850 + 43615851.

It is an arithmetic number, because the mean of its divisors is an integer number (43615851).

Almost surely, 2^87231701 is an apocalyptic number.

It is an amenable number.

87231701 is a deficient number, since it is larger than the sum of its proper divisors (1).

87231701 is an equidigital number, since it uses as much as digits as its factorization.

87231701 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 87231701 is about 9339.7912717576. The cubic root of 87231701 is about 443.4977767611.

Adding to 87231701 its reverse (10713278), we get a palindrome (97944979).

The spelling of 87231701 in words is "eighty-seven million, two hundred thirty-one thousand, seven hundred one".