87431203 has 2 divisors, whose sum is σ = 87431204. Its totient is φ = 87431202.

The previous prime is 87431173. The next prime is 87431207. The reversal of 87431203 is 30213478.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87431203 - 2⁵ = 87431171 is a prime.

It is not a weakly prime, because it can be changed into another prime (87431207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43715601 + 43715602.

It is an arithmetic number, because the mean of its divisors is an integer number (43715602).

Almost surely, 2^87431203 is an apocalyptic number.

87431203 is a deficient number, since it is larger than the sum of its proper divisors (1).

87431203 is an equidigital number, since it uses as much as digits as its factorization.

87431203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 87431203 is about 9350.4653894873. The cubic root of 87431203 is about 443.8356177322.

The spelling of 87431203 in words is "eighty-seven million, four hundred thirty-one thousand, two hundred three".