381121141 has 2 divisors, whose sum is σ = 381121142. Its totient is φ = 381121140.

The previous prime is 381121087. The next prime is 381121163. The reversal of 381121141 is 141121183.

It is an a-pointer prime, because the next prime (381121163) can be obtained adding 381121141 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 351375025 + 29746116 = 18745^2 + 5454^2 .

It is a cyclic number.

It is not a de Polignac number, because 381121141 - 2¹⁵ = 381088373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381121441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190560570 + 190560571.

It is an arithmetic number, because the mean of its divisors is an integer number (190560571).

Almost surely, 2^381121141 is an apocalyptic number.

It is an amenable number.

381121141 is a deficient number, since it is larger than the sum of its proper divisors (1).

381121141 is an equidigital number, since it uses as much as digits as its factorization.

381121141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192, while the sum is 22.

The square root of 381121141 is about 19522.3241700367. The cubic root of 381121141 is about 725.0272782443.

The spelling of 381121141 in words is "three hundred eighty-one million, one hundred twenty-one thousand, one hundred forty-one".