613005231 has 4 divisors (see below), whose sum is σ = 817340312. Its totient is φ = 408670152.

The previous prime is 613005229. The next prime is 613005241. The reversal of 613005231 is 132500316.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 613005231 - 2¹ = 613005229 is a prime.

It is a super-2 number, since 2×613005231² = 751550826466726722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 613005198 and 613005207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613005241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102167536 + ... + 102167541.

It is an arithmetic number, because the mean of its divisors is an integer number (204335078).

Almost surely, 2^613005231 is an apocalyptic number.

613005231 is a deficient number, since it is larger than the sum of its proper divisors (204335081).

613005231 is a wasteful number, since it uses less digits than its factorization.

613005231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204335080.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 613005231 is about 24758.9424451046. The cubic root of 613005231 is about 849.4830679263.

Adding to 613005231 its reverse (132500316), we get a palindrome (745505547).

The spelling of 613005231 in words is "six hundred thirteen million, five thousand, two hundred thirty-one".