320067381 has 16 divisors (see below), whose sum is σ = 452347200. Its totient is φ = 200610048.

The previous prime is 320067329. The next prime is 320067413. The reversal of 320067381 is 183760023.

It is not a de Polignac number, because 320067381 - 2⁶ = 320067317 is a prime.

It is a super-2 number, since 2×320067381² = 204886256760398322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320067481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53730 + ... + 59388.

It is an arithmetic number, because the mean of its divisors is an integer number (28271700).

Almost surely, 2^320067381 is an apocalyptic number.

It is an amenable number.

320067381 is a deficient number, since it is larger than the sum of its proper divisors (132279819).

320067381 is a wasteful number, since it uses less digits than its factorization.

320067381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6788.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 320067381 is about 17890.4270770711. The cubic root of 320067381 is about 684.0383835886.

The spelling of 320067381 in words is "three hundred twenty million, sixty-seven thousand, three hundred eighty-one".