381323357 has 2 divisors, whose sum is σ = 381323358. Its totient is φ = 381323356.

The previous prime is 381323353. The next prime is 381323363. The reversal of 381323357 is 753323183.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 273869401 + 107453956 = 16549^2 + 10366^2 .

It is an emirp because it is prime and its reverse (753323183) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 381323357 - 2² = 381323353 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381323353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190661678 + 190661679.

It is an arithmetic number, because the mean of its divisors is an integer number (190661679).

Almost surely, 2^381323357 is an apocalyptic number.

It is an amenable number.

381323357 is a deficient number, since it is larger than the sum of its proper divisors (1).

381323357 is an equidigital number, since it uses as much as digits as its factorization.

381323357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 35.

The square root of 381323357 is about 19527.5025796951. The cubic root of 381323357 is about 725.1554843693.

The spelling of 381323357 in words is "three hundred eighty-one million, three hundred twenty-three thousand, three hundred fifty-seven".