3207720313 has 8 divisors (see below), whose sum is σ = 3667897728. Its totient is φ = 2748025824.

The previous prime is 3207720311. The next prime is 3207720379. The reversal of 3207720313 is 3130277023.

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 3207720313 - 2¹ = 3207720311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3207720311) 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, 106381 + ... + 133162.

It is an arithmetic number, because the mean of its divisors is an integer number (458487216).

Almost surely, 2^3207720313 is an apocalyptic number.

It is an amenable number.

3207720313 is a deficient number, since it is larger than the sum of its proper divisors (460177415).

3207720313 is a wasteful number, since it uses less digits than its factorization.

3207720313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241463.

The product of its (nonzero) digits is 5292, while the sum is 28.

The square root of 3207720313 is about 56636.7399573810. The cubic root of 3207720313 is about 1474.7967258705.

Adding to 3207720313 its reverse (3130277023), we get a palindrome (6337997336).

The spelling of 3207720313 in words is "three billion, two hundred seven million, seven hundred twenty thousand, three hundred thirteen".