87424331 has 2 divisors, whose sum is σ = 87424332. Its totient is φ = 87424330.

The previous prime is 87424327. The next prime is 87424361. The reversal of 87424331 is 13342478.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87424331 - 2² = 87424327 is a prime.

It is a super-2 number, since 2×87424331² = 15286027301595122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87424361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43712165 + 43712166.

It is an arithmetic number, because the mean of its divisors is an integer number (43712166).

Almost surely, 2^87424331 is an apocalyptic number.

87424331 is a deficient number, since it is larger than the sum of its proper divisors (1).

87424331 is an equidigital number, since it uses as much as digits as its factorization.

87424331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 32.

The square root of 87424331 is about 9350.0979139258. The cubic root of 87424331 is about 443.8239890910.

The spelling of 87424331 in words is "eighty-seven million, four hundred twenty-four thousand, three hundred thirty-one".