3240315729 has 24 divisors (see below), whose sum is σ = 5360309760. Its totient is φ = 1847726208.

The previous prime is 3240315709. The next prime is 3240315733. The reversal of 3240315729 is 9275130423.

It is not a de Polignac number, because 3240315729 - 2¹³ = 3240307537 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3240315693 and 3240315702.

It is not an unprimeable number, because it can be changed into a prime (3240315709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23512 + ... + 83865.

It is an arithmetic number, because the mean of its divisors is an integer number (223346240).

Almost surely, 2^3240315729 is an apocalyptic number.

It is an amenable number.

3240315729 is a deficient number, since it is larger than the sum of its proper divisors (2119994031).

3240315729 is a wasteful number, since it uses less digits than its factorization.

3240315729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107869 (or 107866 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 3240315729 is about 56923.7712120341. The cubic root of 3240315729 is about 1479.7753081403.

The spelling of 3240315729 in words is "three billion, two hundred forty million, three hundred fifteen thousand, seven hundred twenty-nine".