613033321 has 4 divisors (see below), whose sum is σ = 613094544. Its totient is φ = 612972100.

The previous prime is 613033313. The next prime is 613033373. The reversal of 613033321 is 123330316.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 613033321 - 2³ = 613033313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 613033292 and 613033301.

It is not an unprimeable number, because it can be changed into a prime (613033121) 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, 11695 + ... + 36916.

It is an arithmetic number, because the mean of its divisors is an integer number (153273636).

Almost surely, 2^613033321 is an apocalyptic number.

It is an amenable number.

613033321 is a deficient number, since it is larger than the sum of its proper divisors (61223).

613033321 is a wasteful number, since it uses less digits than its factorization.

613033321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61222.

The product of its (nonzero) digits is 972, while the sum is 22.

The square root of 613033321 is about 24759.5097083929. The cubic root of 613033321 is about 849.4960431364.

Adding to 613033321 its reverse (123330316), we get a palindrome (736363637).

The spelling of 613033321 in words is "six hundred thirteen million, thirty-three thousand, three hundred twenty-one".