611145313 has 2 divisors, whose sum is σ = 611145314. Its totient is φ = 611145312.

The previous prime is 611145281. The next prime is 611145323. The reversal of 611145313 is 313541116.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 607523904 + 3621409 = 24648^2 + 1903^2 .

It is a cyclic number.

It is not a de Polignac number, because 611145313 - 2⁵ = 611145281 is a prime.

It is not a weakly prime, because it can be changed into another prime (611145323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305572656 + 305572657.

It is an arithmetic number, because the mean of its divisors is an integer number (305572657).

Almost surely, 2^611145313 is an apocalyptic number.

It is an amenable number.

611145313 is a deficient number, since it is larger than the sum of its proper divisors (1).

611145313 is an equidigital number, since it uses as much as digits as its factorization.

611145313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 25.

The square root of 611145313 is about 24721.3533812370. The cubic root of 611145313 is about 848.6230592377.

Adding to 611145313 its reverse (313541116), we get a palindrome (924686429).

It can be divided in two parts, 611 and 145313, that added together give a square (145924 = 382²).

The spelling of 611145313 in words is "six hundred eleven million, one hundred forty-five thousand, three hundred thirteen".