3231402221 has 4 divisors (see below), whose sum is σ = 3236623200. Its totient is φ = 3226181244.

The previous prime is 3231402199. The next prime is 3231402241. The reversal of 3231402221 is 1222041323.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3231402221 - 2⁶ = 3231402157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3231402193 and 3231402202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3231402241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2609561 + ... + 2610798.

It is an arithmetic number, because the mean of its divisors is an integer number (809155800).

Almost surely, 2^3231402221 is an apocalyptic number.

It is an amenable number.

3231402221 is a deficient number, since it is larger than the sum of its proper divisors (5220979).

3231402221 is an equidigital number, since it uses as much as digits as its factorization.

3231402221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5220978.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 3231402221 is about 56845.4239231268. The cubic root of 3231402221 is about 1478.4171995409.

Adding to 3231402221 its reverse (1222041323), we get a palindrome (4453443544).

The spelling of 3231402221 in words is "three billion, two hundred thirty-one million, four hundred two thousand, two hundred twenty-one".