612720313 has 2 divisors, whose sum is σ = 612720314. Its totient is φ = 612720312.

The previous prime is 612720281. The next prime is 612720319. The reversal of 612720313 is 313027216.

612720313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 311628409 + 301091904 = 17653^2 + 17352^2 .

It is a cyclic number.

It is not a de Polignac number, because 612720313 - 2⁵ = 612720281 is a prime.

It is not a weakly prime, because it can be changed into another prime (612720319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306360156 + 306360157.

It is an arithmetic number, because the mean of its divisors is an integer number (306360157).

Almost surely, 2^612720313 is an apocalyptic number.

It is an amenable number.

612720313 is a deficient number, since it is larger than the sum of its proper divisors (1).

612720313 is an equidigital number, since it uses as much as digits as its factorization.

612720313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 612720313 is about 24753.1879361023. The cubic root of 612720313 is about 849.3514374430.

Adding to 612720313 its reverse (313027216), we get a palindrome (925747529).

It can be divided in two parts, 6127203 and 13, that added together give a palindrome (6127216).

The spelling of 612720313 in words is "six hundred twelve million, seven hundred twenty thousand, three hundred thirteen".