87231733 has 2 divisors, whose sum is σ = 87231734. Its totient is φ = 87231732.

The previous prime is 87231713. The next prime is 87231761. The reversal of 87231733 is 33713278.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87198244 + 33489 = 9338^2 + 183^2 .

It is a cyclic number.

It is not a de Polignac number, because 87231733 - 2⁵ = 87231701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87231713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43615866 + 43615867.

It is an arithmetic number, because the mean of its divisors is an integer number (43615867).

Almost surely, 2^87231733 is an apocalyptic number.

It is an amenable number.

87231733 is a deficient number, since it is larger than the sum of its proper divisors (1).

87231733 is an equidigital number, since it uses as much as digits as its factorization.

87231733 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 34.

The square root of 87231733 is about 9339.7929848579. The cubic root of 87231733 is about 443.4978309919.

The spelling of 87231733 in words is "eighty-seven million, two hundred thirty-one thousand, seven hundred thirty-three".