87203243 has 2 divisors, whose sum is σ = 87203244. Its totient is φ = 87203242.

The previous prime is 87203227. The next prime is 87203257. The reversal of 87203243 is 34230278.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87203243 - 2⁴ = 87203227 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (87203273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43601621 + 43601622.

It is an arithmetic number, because the mean of its divisors is an integer number (43601622).

Almost surely, 2^87203243 is an apocalyptic number.

87203243 is a deficient number, since it is larger than the sum of its proper divisors (1).

87203243 is an equidigital number, since it uses as much as digits as its factorization.

87203243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 87203243 is about 9338.2676659004. The cubic root of 87203243 is about 443.4495434074.

It can be divided in two parts, 8720 and 3243, that multiplied together give a triangular number (28278960 = T₇₅₂₀).

The spelling of 87203243 in words is "eighty-seven million, two hundred three thousand, two hundred forty-three".