471851321 has 2 divisors, whose sum is σ = 471851322. Its totient is φ = 471851320.

The previous prime is 471851311. The next prime is 471851323. The reversal of 471851321 is 123158174.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 277555600 + 194295721 = 16660^2 + 13939^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-471851321 is a prime.

Together with 471851323, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (471851323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 235925660 + 235925661.

It is an arithmetic number, because the mean of its divisors is an integer number (235925661).

Almost surely, 2^471851321 is an apocalyptic number.

It is an amenable number.

471851321 is a deficient number, since it is larger than the sum of its proper divisors (1).

471851321 is an equidigital number, since it uses as much as digits as its factorization.

471851321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 32.

The square root of 471851321 is about 21722.1389600564. The cubic root of 471851321 is about 778.5175222143.

The spelling of 471851321 in words is "four hundred seventy-one million, eight hundred fifty-one thousand, three hundred twenty-one".