87329231 has 4 divisors (see below), whose sum is σ = 95268264. Its totient is φ = 79390200.

The previous prime is 87329167. The next prime is 87329233. The reversal of 87329231 is 13292378.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87329231 - 2⁶ = 87329167 is a prime.

It is a super-2 number, since 2×87329231² = 15252789174102722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87329191 and 87329200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87329233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3969500 + ... + 3969521.

It is an arithmetic number, because the mean of its divisors is an integer number (23817066).

Almost surely, 2^87329231 is an apocalyptic number.

87329231 is a deficient number, since it is larger than the sum of its proper divisors (7939033).

87329231 is a wasteful number, since it uses less digits than its factorization.

87329231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7939032.

The product of its digits is 18144, while the sum is 35.

The square root of 87329231 is about 9345.0110219304. The cubic root of 87329231 is about 443.6630004409.

The spelling of 87329231 in words is "eighty-seven million, three hundred twenty-nine thousand, two hundred thirty-one".