3213246257809 has 9 divisors (see below), whose sum is σ = 3737872488297. Its totient is φ = 2754200322804.

The previous prime is 3213246257807. The next prime is 3213246257849. The reversal of 3213246257809 is 9087526423123.

It is a happy number.

The square root of 3213246257809 is 1792553.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 3213246257809 - 2¹ = 3213246257807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3213246257803) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 12419832 + ... + 12675910.

It is a 1-persistent number, because it is pandigital, but 2⋅3213246257809 = 6426492515618 is not.

Almost surely, 2^{3213246257809} is an apocalyptic number.

3213246257809 is the 1792553-rd square number.

3213246257809 is the 896277-th centered octagonal number.

It is an amenable number.

3213246257809 is a deficient number, since it is larger than the sum of its proper divisors (524626230488).

3213246257809 is an frugal number, since it uses more digits than its factorization.

3213246257809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512172 (or 256086 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 52.

The spelling of 3213246257809 in words is "three trillion, two hundred thirteen billion, two hundred forty-six million, two hundred fifty-seven thousand, eight hundred nine".