505231613 has 8 divisors (see below), whose sum is σ = 515231808. Its totient is φ = 495314784.

The previous prime is 505231609. The next prime is 505231631. The reversal of 505231613 is 316132505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 505231613 - 2² = 505231609 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505231663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8531 + ... + 32912.

It is an arithmetic number, because the mean of its divisors is an integer number (64403976).

Almost surely, 2^505231613 is an apocalyptic number.

It is an amenable number.

505231613 is a deficient number, since it is larger than the sum of its proper divisors (10000195).

505231613 is a wasteful number, since it uses less digits than its factorization.

505231613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41683.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 505231613 is about 22477.3577851134. The cubic root of 505231613 is about 796.4591495317.

The spelling of 505231613 in words is "five hundred five million, two hundred thirty-one thousand, six hundred thirteen".