87313018 has 16 divisors (see below), whose sum is σ = 148468320. Its totient is φ = 38177136.

The previous prime is 87313013. The next prime is 87313027. The reversal of 87313018 is 81031378.

It is a super-2 number, since 2×87313018² = 15247126224536648, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87313013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87880 + ... + 88867.

It is an arithmetic number, because the mean of its divisors is an integer number (9279270).

Almost surely, 2^87313018 is an apocalyptic number.

87313018 is a deficient number, since it is larger than the sum of its proper divisors (61155302).

87313018 is a wasteful number, since it uses less digits than its factorization.

87313018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176781.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 87313018 is about 9344.1435134527. The cubic root of 87313018 is about 443.6355428404.

The spelling of 87313018 in words is "eighty-seven million, three hundred thirteen thousand, eighteen".