3031404221 has 4 divisors (see below), whose sum is σ = 3032401500. Its totient is φ = 3030406944.

The previous prime is 3031404151. The next prime is 3031404241. The reversal of 3031404221 is 1224041303.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 728460100 + 2302944121 = 26990^2 + 47989^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3031404221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3031404193 and 3031404202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3031404241) 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, 494066 + ... + 500163.

It is an arithmetic number, because the mean of its divisors is an integer number (758100375).

Almost surely, 2^3031404221 is an apocalyptic number.

It is an amenable number.

3031404221 is a deficient number, since it is larger than the sum of its proper divisors (997279).

3031404221 is an equidigital number, since it uses as much as digits as its factorization.

3031404221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997278.

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

The square root of 3031404221 is about 55058.1894090243. The cubic root of 3031404221 is about 1447.2646363590.

Adding to 3031404221 its reverse (1224041303), we get a palindrome (4255445524).

The spelling of 3031404221 in words is "three billion, thirty-one million, four hundred four thousand, two hundred twenty-one".