381700 has 36 divisors (see below), whose sum is σ = 906192. Its totient is φ = 138400.

The previous prime is 381697. The next prime is 381707. The reversal of 381700 is 7183.

It is not an unprimeable number, because it can be changed into a prime (381707) 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, 927 + ... + 1273.

It is an arithmetic number, because the mean of its divisors is an integer number (25172).

2³⁸¹⁷⁰⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 381700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (453096).

381700 is an abundant number, since it is smaller than the sum of its proper divisors (524492).

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

381700 is a wasteful number, since it uses less digits than its factorization.

381700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372 (or 365 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 381700 is about 617.8187436457. The cubic root of 381700 is about 72.5394157451.

Adding to 381700 its reverse (7183), we get a palindrome (388883).

It can be divided in two parts, 381 and 700, that added together give a triangular number (1081 = T₄₆).

The spelling of 381700 in words is "three hundred eighty-one thousand, seven hundred".