3205124513 has 4 divisors (see below), whose sum is σ = 3212425920. Its totient is φ = 3197823108.

The previous prime is 3205124479. The next prime is 3205124521. The reversal of 3205124513 is 3154215023.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 3205124513 - 2⁶ = 3205124449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3205124113) 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, 3650045 + ... + 3650922.

It is an arithmetic number, because the mean of its divisors is an integer number (803106480).

Almost surely, 2^3205124513 is an apocalyptic number.

It is an amenable number.

3205124513 is a deficient number, since it is larger than the sum of its proper divisors (7301407).

3205124513 is an equidigital number, since it uses as much as digits as its factorization.

3205124513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7301406.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 3205124513 is about 56613.8190992270. The cubic root of 3205124513 is about 1474.3987994003.

Adding to 3205124513 its reverse (3154215023), we get a palindrome (6359339536).

The spelling of 3205124513 in words is "three billion, two hundred five million, one hundred twenty-four thousand, five hundred thirteen".