381931104 has 48 divisors (see below), whose sum is σ = 1009335600. Its totient is φ = 126451200.

The previous prime is 381931097. The next prime is 381931111. The reversal of 381931104 is 401139183.

It is an interprime number because it is at equal distance from previous prime (381931097) and next prime (381931111).

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 954 + ... + 27654.

It is an arithmetic number, because the mean of its divisors is an integer number (21027825).

Almost surely, 2^381931104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 381931104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (504667800).

381931104 is an abundant number, since it is smaller than the sum of its proper divisors (627404496).

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

381931104 is a wasteful number, since it uses less digits than its factorization.

381931104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26863 (or 26855 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 381931104 is about 19543.0576932066. The cubic root of 381931104 is about 725.5405269116.

The spelling of 381931104 in words is "three hundred eighty-one million, nine hundred thirty-one thousand, one hundred four".