381361212 has 36 divisors (see below), whose sum is σ = 968858800. Its totient is φ = 126479232.

The previous prime is 381361181. The next prime is 381361219. The reversal of 381361212 is 212163183.

It is a happy number.

381361212 is a `hidden beast` number, since 38 + 1 + 3 + 612 + 12 = 666.

381361212 is digitally balanced in base 3 and base 9, because in such bases 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 (36).

381361212 is strictly pandigital in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381361219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19453 + ... + 33780.

Almost surely, 2^381361212 is an apocalyptic number.

It is an amenable number.

381361212 is an abundant number, since it is smaller than the sum of its proper divisors (587497588).

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

381361212 is a wasteful number, since it uses less digits than its factorization.

381361212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53442 (or 53437 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 381361212 is about 19528.4718296133. The cubic root of 381361212 is about 725.1794796234.

It can be divided in two parts, 3813 and 61212, that added together give a square (65025 = 255²).

The spelling of 381361212 in words is "three hundred eighty-one million, three hundred sixty-one thousand, two hundred twelve".