381319 has 2 divisors, whose sum is σ = 381320. Its totient is φ = 381318.

The previous prime is 381301. The next prime is 381323. The reversal of 381319 is 913183.

It is a strong prime.

It is an emirp because it is prime and its reverse (913183) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 381319 - 2⁵ = 381287 is a prime.

It is a super-2 number, since 2×381319² = 290808359522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 381293 and 381302.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190659 + 190660.

It is an arithmetic number, because the mean of its divisors is an integer number (190660).

2³⁸¹³¹⁹ is an apocalyptic number.

381319 is a deficient number, since it is larger than the sum of its proper divisors (1).

381319 is an equidigital number, since it uses as much as digits as its factorization.

381319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 25.

The square root of 381319 is about 617.5103238003. The cubic root of 381319 is about 72.5152722484.

The spelling of 381319 in words is "three hundred eighty-one thousand, three hundred nineteen".