87012911 has 2 divisors, whose sum is σ = 87012912. Its totient is φ = 87012910.

The previous prime is 87012899. The next prime is 87012917. The reversal of 87012911 is 11921078.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87012911 - 2¹⁴ = 86996527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87012917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43506455 + 43506456.

It is an arithmetic number, because the mean of its divisors is an integer number (43506456).

Almost surely, 2^87012911 is an apocalyptic number.

87012911 is a deficient number, since it is larger than the sum of its proper divisors (1).

87012911 is an equidigital number, since it uses as much as digits as its factorization.

87012911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 29.

The square root of 87012911 is about 9328.0711296602. The cubic root of 87012911 is about 443.1266803403.

Adding to 87012911 its reverse (11921078), we get a palindrome (98933989).

The spelling of 87012911 in words is "eighty-seven million, twelve thousand, nine hundred eleven".