320014381 has 2 divisors, whose sum is σ = 320014382. Its totient is φ = 320014380.

The previous prime is 320014337. The next prime is 320014403. The reversal of 320014381 is 183410023.

It is an a-pointer prime, because the next prime (320014403) can be obtained adding 320014381 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., 181575625 + 138438756 = 13475^2 + 11766^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320014381 is a prime.

It is a super-2 number, since 2×320014381² = 204818408093626322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320014301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160007190 + 160007191.

It is an arithmetic number, because the mean of its divisors is an integer number (160007191).

Almost surely, 2^320014381 is an apocalyptic number.

It is an amenable number.

320014381 is a deficient number, since it is larger than the sum of its proper divisors (1).

320014381 is an equidigital number, since it uses as much as digits as its factorization.

320014381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 320014381 is about 17888.9457766521. The cubic root of 320014381 is about 684.0006248356. Note that the first 3 decimals are identical.

The spelling of 320014381 in words is "three hundred twenty million, fourteen thousand, three hundred eighty-one".