381320807 has 8 divisors (see below), whose sum is σ = 437454336. Its totient is φ = 325602072.

The previous prime is 381320789. The next prime is 381320809. The reversal of 381320807 is 708023183.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 381320807 - 2¹² = 381316711 is a prime.

It is a super-2 number, since 2×381320807² = 290811115702262498, 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 (381320809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101723 + ... + 105404.

It is an arithmetic number, because the mean of its divisors is an integer number (54681792).

Almost surely, 2^381320807 is an apocalyptic number.

381320807 is a deficient number, since it is larger than the sum of its proper divisors (56133529).

381320807 is a wasteful number, since it uses less digits than its factorization.

381320807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207397.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 381320807 is about 19527.4372870584. The cubic root of 381320807 is about 725.1538679366.

The spelling of 381320807 in words is "three hundred eighty-one million, three hundred twenty thousand, eight hundred seven".