373828321 has 2 divisors, whose sum is σ = 373828322. Its totient is φ = 373828320.

The previous prime is 373828297. The next prime is 373828339. The reversal of 373828321 is 123828373.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 314707600 + 59120721 = 17740^2 + 7689^2 .

It is an emirp because it is prime and its reverse (123828373) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 373828321 - 2⁷ = 373828193 is a prime.

It is a super-2 number, since 2×373828321² = 279495227163358082, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (373828381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186914160 + 186914161.

It is an arithmetic number, because the mean of its divisors is an integer number (186914161).

Almost surely, 2^373828321 is an apocalyptic number.

It is an amenable number.

373828321 is a deficient number, since it is larger than the sum of its proper divisors (1).

373828321 is an equidigital number, since it uses as much as digits as its factorization.

373828321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 37.

The square root of 373828321 is about 19334.6404414460. The cubic root of 373828321 is about 720.3729555691.

The spelling of 373828321 in words is "three hundred seventy-three million, eight hundred twenty-eight thousand, three hundred twenty-one".