611340321 has 4 divisors (see below), whose sum is σ = 815120432. Its totient is φ = 407560212.

The previous prime is 611340293. The next prime is 611340439. The reversal of 611340321 is 123043116.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 611340321 - 2⁷ = 611340193 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (612340321) 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, 101890051 + ... + 101890056.

It is an arithmetic number, because the mean of its divisors is an integer number (203780108).

Almost surely, 2^611340321 is an apocalyptic number.

It is an amenable number.

611340321 is a deficient number, since it is larger than the sum of its proper divisors (203780111).

611340321 is a wasteful number, since it uses less digits than its factorization.

611340321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203780110.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 611340321 is about 24725.2971872938. The cubic root of 611340321 is about 848.7133109249.

Adding to 611340321 its reverse (123043116), we get a palindrome (734383437).

The spelling of 611340321 in words is "six hundred eleven million, three hundred forty thousand, three hundred twenty-one".