88642231 has 2 divisors, whose sum is σ = 88642232. Its totient is φ = 88642230.

The previous prime is 88642223. The next prime is 88642243. The reversal of 88642231 is 13224688.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 88642231 - 2³ = 88642223 is a prime.

It is a super-2 number, since 2×88642231² = 15714890233314722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88642261) 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 as a sum of consecutive naturals, namely, 44321115 + 44321116.

It is an arithmetic number, because the mean of its divisors is an integer number (44321116).

Almost surely, 2^88642231 is an apocalyptic number.

88642231 is a deficient number, since it is larger than the sum of its proper divisors (1).

88642231 is an equidigital number, since it uses as much as digits as its factorization.

88642231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18432, while the sum is 34.

The square root of 88642231 is about 9415.0003186405. Note that the first 3 decimals coincide. The cubic root of 88642231 is about 445.8754486743.

The spelling of 88642231 in words is "eighty-eight million, six hundred forty-two thousand, two hundred thirty-one".