381337234 has 24 divisors (see below), whose sum is σ = 610849620. Its totient is φ = 178541888.

The previous prime is 381337219. The next prime is 381337247. The reversal of 381337234 is 432733183.

It can be written as a sum of positive squares in 6 ways, for example, as 378108025 + 3229209 = 19445^2 + 1797^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

Its product of digits (36288) is a multiple of the sum of its prime divisors (216).

It is a self number, because there is not a number n which added to its sum of digits gives 381337234.

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 11 ways as a sum of consecutive naturals, for example, 1935624 + ... + 1935820.

Almost surely, 2^381337234 is an apocalyptic number.

381337234 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

381337234 is a deficient number, since it is larger than the sum of its proper divisors (229512386).

381337234 is an frugal number, since it uses more digits than its factorization.

381337234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447 (or 216 counting only the distinct ones).

The product of its digits is 36288, while the sum is 34.

The square root of 381337234 is about 19527.8578958369. The cubic root of 381337234 is about 725.1642808062.

Multiplying 381337234 by its sum of digits (34), we get a square (12965465956 = 113866²).

381337234 divided by its sum of digits (34) gives a square (11215801 = 3349²).

The spelling of 381337234 in words is "three hundred eighty-one million, three hundred thirty-seven thousand, two hundred thirty-four".