3231320405 has 32 divisors (see below), whose sum is σ = 4151347200. Its totient is φ = 2407406400.

The previous prime is 3231320401. The next prime is 3231320461. The reversal of 3231320405 is 5040231323.

It is not a de Polignac number, because 3231320405 - 2² = 3231320401 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3231320401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3850976 + ... + 3851814.

It is an arithmetic number, because the mean of its divisors is an integer number (129729600).

Almost surely, 2^3231320405 is an apocalyptic number.

It is an amenable number.

3231320405 is a deficient number, since it is larger than the sum of its proper divisors (920026795).

3231320405 is a wasteful number, since it uses less digits than its factorization.

3231320405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1505.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 3231320405 is about 56844.7042828090. The cubic root of 3231320405 is about 1478.4047220678.

Adding to 3231320405 its reverse (5040231323), we get a palindrome (8271551728).

The spelling of 3231320405 in words is "three billion, two hundred thirty-one million, three hundred twenty thousand, four hundred five".