381214291 has 4 divisors (see below), whose sum is σ = 382038112. Its totient is φ = 380390472.

The previous prime is 381214261. The next prime is 381214303. The reversal of 381214291 is 192412183.

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 381214291 - 2¹⁵ = 381181523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381214241) 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, 411216 + ... + 412141.

It is an arithmetic number, because the mean of its divisors is an integer number (95509528).

Almost surely, 2^381214291 is an apocalyptic number.

381214291 is a deficient number, since it is larger than the sum of its proper divisors (823821).

381214291 is an equidigital number, since it uses as much as digits as its factorization.

381214291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823820.

The product of its digits is 3456, while the sum is 31.

The square root of 381214291 is about 19524.7097545649. The cubic root of 381214291 is about 725.0863415204.

The spelling of 381214291 in words is "three hundred eighty-one million, two hundred fourteen thousand, two hundred ninety-one".