381143424 has 32 divisors (see below), whose sum is σ = 1012413240. Its totient is φ = 127047680.

The previous prime is 381143381. The next prime is 381143429. The reversal of 381143424 is 424341183.

381143424 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (32).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 381143391 and 381143400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381143429) 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, 495897 + ... + 496664.

Almost surely, 2^381143424 is an apocalyptic number.

It is an amenable number.

381143424 is an abundant number, since it is smaller than the sum of its proper divisors (631269816).

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

381143424 is an equidigital number, since it uses as much as digits as its factorization.

381143424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 992578 (or 992566 counting only the distinct ones).

The product of its digits is 9216, while the sum is 30.

The square root of 381143424 is about 19522.8948673090. The cubic root of 381143424 is about 725.0414080194.

The spelling of 381143424 in words is "three hundred eighty-one million, one hundred forty-three thousand, four hundred twenty-four".