381512112 has 40 divisors (see below), whose sum is σ = 986447280. Its totient is φ = 127057920.

The previous prime is 381512111. The next prime is 381512119. The reversal of 381512112 is 211215183.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (381512111) 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, 64812 + ... + 70452.

It is an arithmetic number, because the mean of its divisors is an integer number (24661182).

Almost surely, 2^381512112 is an apocalyptic number.

It is an amenable number.

381512112 is an abundant number, since it is smaller than the sum of its proper divisors (604935168).

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

381512112 is a wasteful number, since it uses less digits than its factorization.

381512112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7061 (or 7055 counting only the distinct ones).

The product of its digits is 480, while the sum is 24.

The square root of 381512112 is about 19532.3350370610. The cubic root of 381512112 is about 725.2751152481.

Adding to 381512112 its reverse (211215183), we get a palindrome (592727295).

The spelling of 381512112 in words is "three hundred eighty-one million, five hundred twelve thousand, one hundred twelve".