612271321 has 2 divisors, whose sum is σ = 612271322. Its totient is φ = 612271320.

The previous prime is 612271313. The next prime is 612271343. The reversal of 612271321 is 123172216.

It is a happy number.

612271321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 526060096 + 86211225 = 22936^2 + 9285^2 .

It is a cyclic number.

It is not a de Polignac number, because 612271321 - 2³ = 612271313 is a prime.

It is not a weakly prime, because it can be changed into another prime (612271381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306135660 + 306135661.

It is an arithmetic number, because the mean of its divisors is an integer number (306135661).

Almost surely, 2^612271321 is an apocalyptic number.

It is an amenable number.

612271321 is a deficient number, since it is larger than the sum of its proper divisors (1).

612271321 is an equidigital number, since it uses as much as digits as its factorization.

612271321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 25.

The square root of 612271321 is about 24744.1168967494. The cubic root of 612271321 is about 849.1439228668.

The spelling of 612271321 in words is "six hundred twelve million, two hundred seventy-one thousand, three hundred twenty-one".