381533124 has 24 divisors (see below), whose sum is σ = 1017421888. Its totient is φ = 109009440.

The previous prime is 381533123. The next prime is 381533143. The reversal of 381533124 is 421335183.

It is a junction number, because it is equal to n+sod(n) for n = 381533091 and 381533100.

It is not an unprimeable number, because it can be changed into a prime (381533123) 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, 2270947 + ... + 2271114.

Almost surely, 2^381533124 is an apocalyptic number.

It is an amenable number.

381533124 is an abundant number, since it is smaller than the sum of its proper divisors (635888764).

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

381533124 is a wasteful number, since it uses less digits than its factorization.

381533124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4542075 (or 4542073 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 381533124 is about 19532.8729069740. The cubic root of 381533124 is about 725.2884299857.

The spelling of 381533124 in words is "three hundred eighty-one million, five hundred thirty-three thousand, one hundred twenty-four".