314285921 has 2 divisors, whose sum is σ = 314285922. Its totient is φ = 314285920.

The previous prime is 314285911. The next prime is 314285929. The reversal of 314285921 is 129582413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220195921 + 94090000 = 14839^2 + 9700^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-314285921 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (314285929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157142960 + 157142961.

It is an arithmetic number, because the mean of its divisors is an integer number (157142961).

Almost surely, 2^314285921 is an apocalyptic number.

It is an amenable number.

314285921 is a deficient number, since it is larger than the sum of its proper divisors (1).

314285921 is an equidigital number, since it uses as much as digits as its factorization.

314285921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 35.

The square root of 314285921 is about 17728.1110386866. Note that the first 3 decimals coincide. The cubic root of 314285921 is about 679.8946787575.

The spelling of 314285921 in words is "three hundred fourteen million, two hundred eighty-five thousand, nine hundred twenty-one".