388831233 has 32 divisors (see below), whose sum is σ = 616161280. Its totient is φ = 213425280.

The previous prime is 388831213. The next prime is 388831253. The reversal of 388831233 is 332138883.

It is an interprime number because it is at equal distance from previous prime (388831213) and next prime (388831253).

It is not a de Polignac number, because 388831233 - 2⁹ = 388830721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 388831191 and 388831200.

It is not an unprimeable number, because it can be changed into a prime (388831213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88341 + ... + 92637.

It is an arithmetic number, because the mean of its divisors is an integer number (19255040).

Almost surely, 2^388831233 is an apocalyptic number.

It is an amenable number.

388831233 is a deficient number, since it is larger than the sum of its proper divisors (227330047).

388831233 is a wasteful number, since it uses less digits than its factorization.

388831233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4477.

The product of its digits is 82944, while the sum is 39.

The square root of 388831233 is about 19718.8040458847. The cubic root of 388831233 is about 729.8837827125.

The spelling of 388831233 in words is "three hundred eighty-eight million, eight hundred thirty-one thousand, two hundred thirty-three".