87570231 has 32 divisors (see below), whose sum is σ = 140287488. Its totient is φ = 47537280.

The previous prime is 87570209. The next prime is 87570233. The reversal of 87570231 is 13207578.

It is not a de Polignac number, because 87570231 - 2⁶ = 87570167 is a prime.

It is a super-2 number, since 2×87570231² = 15337090714786722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 87570192 and 87570201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87570233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32101 + ... + 34721.

It is an arithmetic number, because the mean of its divisors is an integer number (4383984).

Almost surely, 2^87570231 is an apocalyptic number.

87570231 is a deficient number, since it is larger than the sum of its proper divisors (52717257).

87570231 is a wasteful number, since it uses less digits than its factorization.

87570231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2711.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 87570231 is about 9357.8967188145. The cubic root of 87570231 is about 444.0707469848.

The spelling of 87570231 in words is "eighty-seven million, five hundred seventy thousand, two hundred thirty-one".