87313500 has 72 divisors (see below), whose sum is σ = 275459184. Its totient is φ = 23282400.

The previous prime is 87313489. The next prime is 87313511. The reversal of 87313500 is 531378.

It is an interprime number because it is at equal distance from previous prime (87313489) and next prime (87313511).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5202 + ... + 14201.

It is an arithmetic number, because the mean of its divisors is an integer number (3825822).

Almost surely, 2^87313500 is an apocalyptic number.

It is an amenable number.

87313500 is an abundant number, since it is smaller than the sum of its proper divisors (188145684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87313500 is a wasteful number, since it uses less digits than its factorization.

87313500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19428 (or 19413 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 87313500 is about 9344.1693049730. The cubic root of 87313500 is about 443.6363591827.

Adding to 87313500 its reverse (531378), we get a palindrome (87844878).

The spelling of 87313500 in words is "eighty-seven million, three hundred thirteen thousand, five hundred".