381212134 has 16 divisors (see below), whose sum is σ = 597643200. Its totient is φ = 182133504.

The previous prime is 381212123. The next prime is 381212141. The reversal of 381212134 is 431212183.

It is a happy number.

It is a super-2 number, since 2×381212134² = 290645382217667912, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 381212099 and 381212108.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 28254 + ... + 39505.

It is an arithmetic number, because the mean of its divisors is an integer number (37352700).

Almost surely, 2^381212134 is an apocalyptic number.

381212134 is a deficient number, since it is larger than the sum of its proper divisors (216431066).

381212134 is a wasteful number, since it uses less digits than its factorization.

381212134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67887.

The product of its digits is 1152, while the sum is 25.

The square root of 381212134 is about 19524.6545167898. The cubic root of 381212134 is about 725.0849739482.

The spelling of 381212134 in words is "three hundred eighty-one million, two hundred twelve thousand, one hundred thirty-four".