612353321 has 2 divisors, whose sum is σ = 612353322. Its totient is φ = 612353320.

The previous prime is 612353309. The next prime is 612353351. The reversal of 612353321 is 123353216.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 422878096 + 189475225 = 20564^2 + 13765^2 .

It is a cyclic number.

It is not a de Polignac number, because 612353321 - 2⁶ = 612353257 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 (612353351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306176660 + 306176661.

It is an arithmetic number, because the mean of its divisors is an integer number (306176661).

Almost surely, 2^612353321 is an apocalyptic number.

It is an amenable number.

612353321 is a deficient number, since it is larger than the sum of its proper divisors (1).

612353321 is an equidigital number, since it uses as much as digits as its factorization.

612353321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 26.

The square root of 612353321 is about 24745.7738007927. The cubic root of 612353321 is about 849.1818290973.

The spelling of 612353321 in words is "six hundred twelve million, three hundred fifty-three thousand, three hundred twenty-one".