381307344 has 40 divisors (see below), whose sum is σ = 1074594912. Its totient is φ = 115547520.

The previous prime is 381307343. The next prime is 381307351. The reversal of 381307344 is 443703183.

381307344 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381307343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 360559 + ... + 361614.

Almost surely, 2^381307344 is an apocalyptic number.

It is an amenable number.

381307344 is an abundant number, since it is smaller than the sum of its proper divisors (693287568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

381307344 is a wasteful number, since it uses less digits than its factorization.

381307344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722195 (or 722189 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 381307344 is about 19527.0925639226. The cubic root of 381307344 is about 725.1453336865.

The spelling of 381307344 in words is "three hundred eighty-one million, three hundred seven thousand, three hundred forty-four".