3245305720731 has 16 divisors (see below), whose sum is σ = 4556095852800. Its totient is φ = 2049090408288.

The previous prime is 3245305720729. The next prime is 3245305720753. The reversal of 3245305720731 is 1370275035423.

It is not a de Polignac number, because 3245305720731 - 2¹ = 3245305720729 is a prime.

It is a super-2 number, since 2×3245305720731² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3245305720781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7800511 + ... + 8206008.

It is an arithmetic number, because the mean of its divisors is an integer number (284755990800).

Almost surely, 2^{3245305720731} is an apocalyptic number.

3245305720731 is a deficient number, since it is larger than the sum of its proper divisors (1310790132069).

3245305720731 is a wasteful number, since it uses less digits than its factorization.

3245305720731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16010098.

The product of its (nonzero) digits is 529200, while the sum is 42.

The spelling of 3245305720731 in words is "three trillion, two hundred forty-five billion, three hundred five million, seven hundred twenty thousand, seven hundred thirty-one".