87031512 has 48 divisors (see below), whose sum is σ = 240168240. Its totient is φ = 28461888.

The previous prime is 87031501. The next prime is 87031513. The reversal of 87031512 is 21513078.

It is a super-2 number, since 2×87031512² = 15148968162012288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87031513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7588 + ... + 15219.

It is an arithmetic number, because the mean of its divisors is an integer number (5003505).

Almost surely, 2^87031512 is an apocalyptic number.

It is an amenable number.

87031512 is an abundant number, since it is smaller than the sum of its proper divisors (153136728).

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

87031512 is a wasteful number, since it uses less digits than its factorization.

87031512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22872 (or 22865 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 87031512 is about 9329.0681206646. The cubic root of 87031512 is about 443.1582542451.

The spelling of 87031512 in words is "eighty-seven million, thirty-one thousand, five hundred twelve".