611523313 has 4 divisors (see below), whose sum is σ = 611573220. Its totient is φ = 611473408.

The previous prime is 611523301. The next prime is 611523389. The reversal of 611523313 is 313325116.

611523313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 365880384 + 245642929 = 19128^2 + 15673^2 .

It is a cyclic number.

It is not a de Polignac number, because 611523313 - 2²¹ = 609426161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611523713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7473 + ... + 35761.

It is an arithmetic number, because the mean of its divisors is an integer number (152893305).

Almost surely, 2^611523313 is an apocalyptic number.

It is an amenable number.

611523313 is a deficient number, since it is larger than the sum of its proper divisors (49907).

611523313 is a wasteful number, since it uses less digits than its factorization.

611523313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49906.

The product of its digits is 1620, while the sum is 25.

The square root of 611523313 is about 24728.9974119454. The cubic root of 611523313 is about 848.7979840317.

Adding to 611523313 its reverse (313325116), we get a palindrome (924848429).

The spelling of 611523313 in words is "six hundred eleven million, five hundred twenty-three thousand, three hundred thirteen".