3203220409 has 3 divisors (see below), whose sum is σ = 3203277007. Its totient is φ = 3203163812.

The previous prime is 3203220367. The next prime is 3203220463. The reversal of 3203220409 is 9040223023.

The square root of 3203220409 is 56597.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 799475625 + 2403744784 = 28275^2 + 49028^2 .

It is not a de Polignac number, because 3203220409 - 2⁹ = 3203219897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3203220809) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 28299 + ... + 84895.

Almost surely, 2^3203220409 is an apocalyptic number.

3203220409 is the 56597-th square number.

3203220409 is the 28299-th centered octagonal number.

It is an amenable number.

3203220409 is a deficient number, since it is larger than the sum of its proper divisors (56598).

3203220409 is an frugal number, since it uses more digits than its factorization.

3203220409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113194 (or 56597 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The cubic root of 3203220409 is about 1474.1067707270.

Multiplying 3203220409 by its sum of digits (25), we get a square (80080510225 = 282985²).

It can be divided in two parts, 32032 and 20409, that added together give a square (52441 = 229²).

The spelling of 3203220409 in words is "three billion, two hundred three million, two hundred twenty thousand, four hundred nine".