368720321 has 2 divisors, whose sum is σ = 368720322. Its totient is φ = 368720320.

The previous prime is 368720273. The next prime is 368720347. The reversal of 368720321 is 123027863.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 336355600 + 32364721 = 18340^2 + 5689^2 .

It is a cyclic number.

It is not a de Polignac number, because 368720321 - 2²² = 364526017 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (368720371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 184360160 + 184360161.

It is an arithmetic number, because the mean of its divisors is an integer number (184360161).

Almost surely, 2^368720321 is an apocalyptic number.

It is an amenable number.

368720321 is a deficient number, since it is larger than the sum of its proper divisors (1).

368720321 is an equidigital number, since it uses as much as digits as its factorization.

368720321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 368720321 is about 19202.0915787838. The cubic root of 368720321 is about 717.0768318987.

The spelling of 368720321 in words is "three hundred sixty-eight million, seven hundred twenty thousand, three hundred twenty-one".