388830431 has 8 divisors (see below), whose sum is σ = 424347984. Its totient is φ = 353341120.

The previous prime is 388830371. The next prime is 388830437. The reversal of 388830431 is 134038883.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 388830431 - 2¹⁸ = 388568287 is a prime.

It is a super-2 number, since 2×388830431² = 302378208143291522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388830437) 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 in 7 ways as a sum of consecutive naturals, for example, 30401 + ... + 41253.

It is an arithmetic number, because the mean of its divisors is an integer number (53043498).

Almost surely, 2^388830431 is an apocalyptic number.

388830431 is a deficient number, since it is larger than the sum of its proper divisors (35517553).

388830431 is a wasteful number, since it uses less digits than its factorization.

388830431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14121.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 388830431 is about 19718.7837099553. The cubic root of 388830431 is about 729.8832808948.

The spelling of 388830431 in words is "three hundred eighty-eight million, eight hundred thirty thousand, four hundred thirty-one".