309224401 has 2 divisors, whose sum is σ = 309224402. Its totient is φ = 309224400.

The previous prime is 309224371. The next prime is 309224413. The reversal of 309224401 is 104422903.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 297528001 + 11696400 = 17249^2 + 3420^2 .

It is a cyclic number.

It is not a de Polignac number, because 309224401 - 2¹⁵ = 309191633 is a prime.

It is not a weakly prime, because it can be changed into another prime (309224431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154612200 + 154612201.

It is an arithmetic number, because the mean of its divisors is an integer number (154612201).

Almost surely, 2^309224401 is an apocalyptic number.

It is an amenable number.

309224401 is a deficient number, since it is larger than the sum of its proper divisors (1).

309224401 is an equidigital number, since it uses as much as digits as its factorization.

309224401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 309224401 is about 17584.7775362670. Note that the first 3 decimals coincide. The cubic root of 309224401 is about 676.2250463036.

The spelling of 309224401 in words is "three hundred nine million, two hundred twenty-four thousand, four hundred one".