88640311 has 2 divisors, whose sum is σ = 88640312. Its totient is φ = 88640310.

The previous prime is 88640303. The next prime is 88640317. The reversal of 88640311 is 11304688.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 88640311 - 2³ = 88640303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88640317) 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, 44320155 + 44320156.

It is an arithmetic number, because the mean of its divisors is an integer number (44320156).

Almost surely, 2^88640311 is an apocalyptic number.

88640311 is a deficient number, since it is larger than the sum of its proper divisors (1).

88640311 is an equidigital number, since it uses as much as digits as its factorization.

88640311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 88640311 is about 9414.8983531422. The cubic root of 88640311 is about 445.8722294148.

Adding to 88640311 its reverse (11304688), we get a palindrome (99944999).

The spelling of 88640311 in words is "eighty-eight million, six hundred forty thousand, three hundred eleven".