381148212 has 12 divisors (see below), whose sum is σ = 889345856. Its totient is φ = 127049400.

The previous prime is 381148199. The next prime is 381148213. The reversal of 381148212 is 212841183.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 381148212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381148213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15881164 + ... + 15881187.

Almost surely, 2^381148212 is an apocalyptic number.

It is an amenable number.

381148212 is an abundant number, since it is smaller than the sum of its proper divisors (508197644).

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

381148212 is a wasteful number, since it uses less digits than its factorization.

381148212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31762358 (or 31762356 counting only the distinct ones).

The product of its digits is 3072, while the sum is 30.

The square root of 381148212 is about 19523.0174921809. The cubic root of 381148212 is about 725.0444440451.

Adding to 381148212 its reverse (212841183), we get a palindrome (593989395).

The spelling of 381148212 in words is "three hundred eighty-one million, one hundred forty-eight thousand, two hundred twelve".