87531234 has 32 divisors (see below), whose sum is σ = 202819200. Its totient is φ = 24665472.

The previous prime is 87531217. The next prime is 87531239. The reversal of 87531234 is 43213578.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 87531195 and 87531204.

It is not an unprimeable number, because it can be changed into a prime (87531239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11209 + ... + 17340.

It is an arithmetic number, because the mean of its divisors is an integer number (6338100).

Almost surely, 2^87531234 is an apocalyptic number.

87531234 is an abundant number, since it is smaller than the sum of its proper divisors (115287966).

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

87531234 is a wasteful number, since it uses less digits than its factorization.

87531234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28634.

The product of its digits is 20160, while the sum is 33.

The square root of 87531234 is about 9355.8128454988. The cubic root of 87531234 is about 444.0048189559.

The spelling of 87531234 in words is "eighty-seven million, five hundred thirty-one thousand, two hundred thirty-four".