381424319 has 4 divisors (see below), whose sum is σ = 390294696. Its totient is φ = 372553944.

The previous prime is 381424313. The next prime is 381424331. The reversal of 381424319 is 913424183.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 381424319 - 2⁸ = 381424063 is a prime.

It is a super-2 number, since 2×381424319² = 290969022249227522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381424313) 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, 4435124 + ... + 4435209.

It is an arithmetic number, because the mean of its divisors is an integer number (97573674).

Almost surely, 2^381424319 is an apocalyptic number.

381424319 is a deficient number, since it is larger than the sum of its proper divisors (8870377).

381424319 is an equidigital number, since it uses as much as digits as its factorization.

381424319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8870376.

The product of its digits is 20736, while the sum is 35.

The square root of 381424319 is about 19530.0875318059. The cubic root of 381424319 is about 725.2194779031.

The spelling of 381424319 in words is "three hundred eighty-one million, four hundred twenty-four thousand, three hundred nineteen".