388731241 has 4 divisors (see below), whose sum is σ = 409190800. Its totient is φ = 368271684.

The previous prime is 388731221. The next prime is 388731269. The reversal of 388731241 is 142137883.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 388731241 - 2¹¹ = 388729193 is a prime.

It is a super-2 number, since 2×388731241² = 302223955458800162, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 388731241.

It is not an unprimeable number, because it can be changed into a prime (388731221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10229751 + ... + 10229788.

It is an arithmetic number, because the mean of its divisors is an integer number (102297700).

Almost surely, 2^388731241 is an apocalyptic number.

It is an amenable number.

388731241 is a deficient number, since it is larger than the sum of its proper divisors (20459559).

388731241 is a wasteful number, since it uses less digits than its factorization.

388731241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20459558.

The product of its digits is 32256, while the sum is 37.

The square root of 388731241 is about 19716.2684349752. The cubic root of 388731241 is about 729.8212116105.

The spelling of 388731241 in words is "three hundred eighty-eight million, seven hundred thirty-one thousand, two hundred forty-one".