87134903 has 2 divisors, whose sum is σ = 87134904. Its totient is φ = 87134902.

The previous prime is 87134869. The next prime is 87134909. The reversal of 87134903 is 30943178.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87134903 - 2¹² = 87130807 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87134909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43567451 + 43567452.

It is an arithmetic number, because the mean of its divisors is an integer number (43567452).

Almost surely, 2^87134903 is an apocalyptic number.

87134903 is a deficient number, since it is larger than the sum of its proper divisors (1).

87134903 is an equidigital number, since it uses as much as digits as its factorization.

87134903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 87134903 is about 9334.6078117937. The cubic root of 87134903 is about 443.3336713335. Note that the first 3 decimals are identical.

The spelling of 87134903 in words is "eighty-seven million, one hundred thirty-four thousand, nine hundred three".