87295831 has 16 divisors (see below), whose sum is σ = 101493504. Its totient is φ = 73540224.

The previous prime is 87295807. The next prime is 87295889. The reversal of 87295831 is 13859278.

It is a cyclic number.

It is not a de Polignac number, because 87295831 - 2¹⁵ = 87263063 is a prime.

It is a super-2 number, since 2×87295831² = 15241124219961122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87295531) 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 15 ways as a sum of consecutive naturals, for example, 201391 + ... + 201823.

It is an arithmetic number, because the mean of its divisors is an integer number (6343344).

Almost surely, 2^87295831 is an apocalyptic number.

87295831 is a deficient number, since it is larger than the sum of its proper divisors (14197673).

87295831 is a wasteful number, since it uses less digits than its factorization.

87295831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870.

The product of its digits is 120960, while the sum is 43.

The square root of 87295831 is about 9343.2238012369. The cubic root of 87295831 is about 443.6064320060.

The spelling of 87295831 in words is "eighty-seven million, two hundred ninety-five thousand, eight hundred thirty-one".